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Artículos de revistas sobre el tema "Lymphocytes"

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1

Klein, Ami, Michael Lishner, Barbara Bruser, John E. Curtis, Dominick J. Amato, and Aaron Malkin. "Cortisol catabolism by lymphocytes of patients with chronic lymphocytic leukemia." Biochemistry and Cell Biology 68, no. 4 (1990): 810–13. http://dx.doi.org/10.1139/o90-118.

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A low rate of catabolism of cortisol by lymphocytes correlates with high sensitivity of the cells to the steroid and causes them to die at a greater rate than control samples. Since lymphocytes of patients with chronic lymphocytic leukemia respond to treatment with glucocorticosteroids and are cortisol sensitive, we attempted to see whether their capability to catabolize cortisol differs from that of normal lymphocytes. No difference was found between the two groups of cells with regard to the pattern of cortisol metabolites. However, the lymphocytes of the chronic lymphocytic leukemia groups
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2

Spain, B. A., D. M. Soliman, R. A. Sidner, and H. L. Twigg. "Enhanced proliferation and IL-2 secretion by lung lymphocytes from HIV-infected subjects." American Journal of Physiology-Lung Cellular and Molecular Physiology 269, no. 4 (1995): L498—L506. http://dx.doi.org/10.1152/ajplung.1995.269.4.l498.

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Human immunodeficiency virus (HIV)-positive patients frequently develop a CD3+/CD8+ cytotoxic T cell lymphocytic alveolitis. This could occur through in situ expansion of lung lymphocytes. We evaluated lung and blood lymphocyte proliferation in asymptomatic HIV-infected individuals by measuring spontaneous and cytokine-induced tritiated thymidine incorporation. Interleukin (IL)-2 and IL-4 secretion was determined with the use of enzyme-linked immunosorbent assay, Western blotting, and immunoprecipitation techniques. Spontaneous proliferation by lung lymphocytes from HIV-positive patients was s
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3

Chen, Lin-Ying, Julia Y. S. Tsang, Yun-Bi Ni, et al. "Lymphocyte subsets contribute to the degree of lobulitis and ductitis in sclerosing lymphocytic lobulitis of the breast." Journal of Clinical Pathology 69, no. 6 (2015): 527–32. http://dx.doi.org/10.1136/jclinpath-2015-203334.

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AimsSclerosing lymphocytic lobulitis (SLL) of the breast is characterised by lymphocytic lobulitis, ductitis, vasculitis and dense keloidal fibrosis with epithelioid fibroblasts. However, the subsets of the infiltrating lymphocytes and their contribution to disease progression have not been fully explored.MethodsCD20, CD3, CD4, CD8 and regulatory T (Treg) lymphocytes were evaluated in the epithelial and vascular areas in SLL. The relationship between the lymphocyte subset in different regions and the degree of inflammation was analysed.ResultsLymphocytic infiltration was mainly located in peri
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4

Raje, Manoj, and Karvita B. Ahluwalia. "Motility of leukemic lymphocytes." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 3 (1990): 368–69. http://dx.doi.org/10.1017/s0424820100159382.

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In Acute Lymphocytic Leukemia motility of lymphocytes is associated with dissemination of malignancy and establishment of metastatic foci. Normal and leukemic lymphocytes in circulation reach solid tissues where due to in adequate perfusion some cells get trapped among tissue spaces. Although normal lymphocytes reenter into circulation leukemic lymphocytes are thought to remain entrapped owing to reduced mobility and form secondary metastasis. Cell surface, transmembrane interactions, cytoskeleton and level of cell differentiation are implicated in lymphocyte mobility. An attempt has been made
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5

Hrushik, Amin, Lisa Thomas, Qi Shi, Sudeep Ruparelia, Alfonso Zangardi, and Howard Nash. "Chronic Lymphocytic Leukemia with Bi-Nucleated Lymphocytes." Blood 126, no. 23 (2015): 5285. http://dx.doi.org/10.1182/blood.v126.23.5285.5285.

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Abstract Introduction: B-cell chronic lymphocytic leukemia is one of the common lymphoproliferative disorders in the adult patient population. It is very uncommon to find bi-nucleated lymphocytes as a morphological feature in this disorder. Our patient was diagnosed with CLL and was found to have bi-nucleated lymphocytes in the peripheral smear. The mechanism behind this type of morphological feature of lymphocytes is unknown in CLL, and whether it has prognostic value on disease outcome is undetermined. Case Description: 62 y/o man was referred to hematology oncology after diagnosis of small
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6

Choccalingam, Chidambharam. "Volume, conductance, and scatter parameters of neoplastic and nonneoplastic lymphocytes using Coulter LH780." Journal of Laboratory Physicians 10, no. 01 (2018): 085–88. http://dx.doi.org/10.4103/jlp.jlp_65_17.

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Abstract PURPOSE: Automated hematology analyzers yield a complete hematological profile including a complete blood count and a differential white blood cell count. The differential count is based on analyses of three parameters, namely, volume, conductance, and scatter (VCS). We aimed to evaluate the VCS parameters, histograms, and scatterplots of neoplastic and nonneoplastic lymphocytes. MATERIAL AND METHODS: Patients were grouped into four categories, namely, acute lymphoblastic leukemia (ALL), chronic systemic disorders, chronic lymphocytic leukemia (CLL), and acute viral disease. Lymphocyt
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7

Wiley, J. S., J. R. Chen, G. P. Jamieson, and P. J. Thurlow. "Agonists for endothelial P2 purinoceptors trigger a signalling pathway producing Ca2+ responses in lymphocytes adherent to endothelial cells." Biochemical Journal 311, no. 2 (1995): 589–94. http://dx.doi.org/10.1042/bj3110589.

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Recirculation of lymphocytes through the body involves their frequent adhesion to endothelial cells but little is known of the signalling pathways between these two cell types. Lymphocytes from patients with chronic lymphocytic leukaemia were loaded with the Ca(2+)-sensitive indicator, fura 2, and allowed to adhere to either glass or monolayers of human umbilical-vein endothelial cells. Addition of ATP or UTP (1-10 microM) to the superfusate produced a transient rise in cytosolic Ca2+ concentration in the lymphocytes adherent to endothelium (24 of 35 cells). In contrast, ATP or UTP (1-10 micro
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8

Winther, Birgit, Donald J. Innes, John Bratsch, and Frederick G. Hayden. "Lymphocyte Subsets in the Nasal Mucosa and Peripheral Blood during Experimental Rhinovirus Infection." American Journal of Rhinology 6, no. 4 (1992): 149–56. http://dx.doi.org/10.2500/105065892781874621.

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The local cellular response during rhinovirus infection was studied with immunohistochemical staining of lymphocyte subpopulations in the lamina propria of the nasal mucosa (inferior turbinate) in 25 biopsies from volunteers with experimental rhinovirus colds and compared with biopsies from healthy volunteers. Biopsies from rhinovirus infected volunteers, taken either in the early phase of the infection (days 3 and 5) or during convalescence (day 14) were evaluated in a semiquantitative fashion for degree of infiltration. Lymphocyte subpopulations also were counted on coded specimens. During e
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9

Li, Lijin, Sharon M. Dial, Monika Schmelz, Margaret A. Rennels, and Neil M. Ampel. "Cellular Immune Suppressor Activity Resides in Lymphocyte Cell Clusters Adjacent to Granulomata in Human Coccidioidomycosis." Infection and Immunity 73, no. 7 (2005): 3923–28. http://dx.doi.org/10.1128/iai.73.7.3923-3928.2005.

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ABSTRACT The in situ immunologic response in human coccidioidomycosis remains undefined. To explore this further, pulmonary necrotizing coccidioidal granulomata were examined using immunohistochemical staining for lymphocyte subsets and for the cytokines interleukin-10 (IL-10) and gamma interferon (IFN-γ). Discrete perigranulomatous lymphocytic clusters were seen in eight of nine tissues examined. In these tissues, T lymphocytes (CD3+) significantly outnumbered B lymphocytes (CD20+) in the mantle area of the granulomata (P = 0.028), whereas the clusters were composed of roughly equal numbers o
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10

Zhang, Qiao-quan, Yan-fang Zhang, Nian Yu, Xing-jian Lin, and Qing Di. "Differential Diagnosis of Autoimmune Encephalitis from Infectious Lymphocytic Encephalitis by Analysing the Lymphocyte Subsets of Cerebrospinal Fluid." Analytical Cellular Pathology 2019 (December 3, 2019): 1–6. http://dx.doi.org/10.1155/2019/9684175.

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This study is aimed at investigating the lymphocyte subsets of cerebrospinal fluid (CSF) to provide possible differential diagnostic values and better understand the pathophysiological mechanism underlying autoimmune encephalitis (AE) and infectious lymphocytic encephalitis. A series of CD markers, including CD3/4/8/20 representing different types and developmental stages of lymphocytes, were used to count the corresponding subpopulations of CSF from clinical and laboratory confirmed cases of anti-N-methyl-D-aspartate receptor AE (NMDAR-AE), herpes simplex virus encephalitis (HSVE), and tuberc
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11

Mirkamali, Mona, Hamid Reza Momeni, Tahereh Etemadi, Ghasem Mosayebi, and Majid Komijani. "Involvement of caspase-3 in apoptosis of human lymphocytes exposed to cadmium chloride." Human & Experimental Toxicology 41 (January 2022): 096032712211217. http://dx.doi.org/10.1177/09603271221121796.

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Background Lymphocytes are a group of white blood cells with a variety of roles their integrity is crucial for the body’s immune responses. Cadmium, a heavy metal and environmental pollutant, is known as a toxicant to exert its adverse effects on some sort of cells including blood cells. Research Design In this study, human lymphocytes were divided into 3 groups: (1) lymphocytes at 0-h, (2) lymphocytes at 24 h (control), (3) lymphocytes treated with cadmium chloride (15 μM). Lymphocyte viability and plasma membrane integrity were assessed in these groups. In addition, the occurrence of apoptos
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12

Schimpff, R. M., and A. M. Repellin. "In vitro effect of human growth hormone on lymphocyte transformation and lymphocyte growth factors secretion." Acta Endocrinologica 120, no. 6 (1989): 745–52. http://dx.doi.org/10.1530/acta.0.1200745.

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Abstract. Cultures of human blood peripheral lymphocytes were performed in the presence or absence of human growth hormone, and also of phytohemagglutinin and normal human serum 10%. After incubation for 48 h, the supernatants were tested for their ability to promote the uptake of [3H]thymidine into lectin-activated lymphocytes. Supernatants from lymphocyte-free control samples, treated in the same manner, were assayed under the same experimental conditions. Variance analysis of the different dose-response relationships was performed. The results of these in vitro experiments confirm that phys
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13

Twigg, Homer L., Blake A. Spain, Diaa M. Soliman та ін. "Production of interferon-γ by lung lymphocytes in HIV-infected individuals". American Journal of Physiology-Lung Cellular and Molecular Physiology 276, № 2 (1999): L256—L262. http://dx.doi.org/10.1152/ajplung.1999.276.2.l256.

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A CD8+lymphocytic alveolitis occurs in up to 60% of asymptomatic human immunodeficiency virus (HIV)-infected individuals. Early in HIV infection, lymphocytes consist predominantly of cytotoxic T lymphocytes directed against HIV-infected targets. As HIV disease progresses, they are replaced by CD8+CD57+suppressor cells. Virus-specific cytotoxic T lymphocytes secrete interferon-γ (IFN-γ), an important cytokine in upregulating immune responses, primarily through macrophage activation. We examined the ability of lung and blood lymphocytes from HIV-positive patients at various stages of HIV infecti
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14

Paschke, R., N. Brückner, R. Schmeidl, P. Pfiester, and K. H. Usadel. "Predominant intraepithelial localization of primed T cells and immunoglobulin-producing lymphocytes in Graves' disease." Acta Endocrinologica 124, no. 6 (1991): 630–36. http://dx.doi.org/10.1530/acta.0.1240630.

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Abstract. It has been proposed that intrathyroidal lymphocytes, localized in specific anatomical sites might have distinct, pathophysiologically relevant functions in Graves' disease. However, most studies of intrathyroidal lymphocytes were restricted to two lymphocyte locations and used semiquantitative methods. Therefore we used seven anatomically different lymphoid compartments to classify and evaluate by quantitative representative methods the total intrathyroidal lymphocytic infiltration and the staining indexes for immunoglobulin-producing plasmocytes and primed T cells (CD45RO), which p
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15

Silber, R., CM Farber, E. Papadopoulos, et al. "Glutathione depletion in chronic lymphocytic leukemia B lymphocytes." Blood 80, no. 8 (1992): 2038–43. http://dx.doi.org/10.1182/blood.v80.8.2038.2038.

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Abstract Glutathione (GSH) content may be the major determinant of a cell's sensitivity to cytotoxic alkylating agents. In the present study, the GSH concentration was determined in lymphocytes isolated from the blood of normal subjects and patients with chronic lymphocytic leukemia (CLL). Comparable levels were found in both types of cells. Incubation for 20 hours led to a decrease in GSH to 51% of baseline values in CLL B cells. Under the same conditions, normal B- or T-lymphocyte GSH content remained constant. GSH depletion was shown to be a characteristic of the B-CLL B lymphocyte. It was
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16

Silber, R., CM Farber, E. Papadopoulos, et al. "Glutathione depletion in chronic lymphocytic leukemia B lymphocytes." Blood 80, no. 8 (1992): 2038–43. http://dx.doi.org/10.1182/blood.v80.8.2038.bloodjournal8082038.

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Glutathione (GSH) content may be the major determinant of a cell's sensitivity to cytotoxic alkylating agents. In the present study, the GSH concentration was determined in lymphocytes isolated from the blood of normal subjects and patients with chronic lymphocytic leukemia (CLL). Comparable levels were found in both types of cells. Incubation for 20 hours led to a decrease in GSH to 51% of baseline values in CLL B cells. Under the same conditions, normal B- or T-lymphocyte GSH content remained constant. GSH depletion was shown to be a characteristic of the B-CLL B lymphocyte. It was not found
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17

Maslak, G. S., G. P. Chernenko, S. V. Abramov, et al. "Glycobiom Lymphocytes Surface Study of Patients with B-Cell Chronic Lymphocytic Leukemia." Ukraïnsʹkij žurnal medicini, bìologìï ta sportu 6, no. 6 (2021): 134–40. http://dx.doi.org/10.26693/jmbs06.06.134.

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The purpose of the study was to investigate the intensity of exposure of peripheral blood lymphocyte surface glycans in patients with B-cell chronic lymphocytic leukemia by measuring the density of lectin- or antigen-positive epitopes under antitumor therapy in order to evaluate it for a more reasonable selection of qualitative and quantitative composition of therapy. Materials and methods. The objects of the study were blood lymphocytes of patients with chronic lymphocytic leukemia (n=15) aged 58-66 years before and after a course of standard chemotherapy according to the COP scheme. The cont
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18

Zhang, Jimin, Satish Devadas, and Yufang Shi. "Differential roles of CD95L and TRAIL in activation-induced cell death of cytotoxic T lymphocytes (110.22)." Journal of Immunology 188, no. 1_Supplement (2012): 110.22. http://dx.doi.org/10.4049/jimmunol.188.supp.110.22.

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Abstract Cytotoxic T lymphocytes can be differentiated into type 1 (Tc1) and type 2 (Tc2) subsets as their T helper counterparts. Interestingly, our investigation in activation-induced cell death mechanisms reveals that CD95L mediates cell death in Tc1 lymphocytes and that Tc2 lymphocytes require TRAIL. Cell death in both subsets is also dependent on caspases. Inhibiting CD95L binding to its receptors in Tc1 lymphocytes from wild type mice displays altered Tc1 lymphocyte death, while Inhibiting TRAIL binding to its receptors in Tc2 lymphocytes shows altered Tc2 lymphocyte death. Activation-ind
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19

Gagne, J. M., D. J. Weiss, and P. J. Armstrong. "Histopathologic Evaluation of Feline Inflammatory Liver Disease." Veterinary Pathology 33, no. 5 (1996): 521–26. http://dx.doi.org/10.1177/030098589603300506.

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To better define the histopathologic features of feline inflammatory liver disease, we studied feline liver biopsies evaluated at the University of Minnesota Veterinary Teaching Hospital over a 10-year period. Of 175 liver sections examined, 45 had portal inflammatory infiltrates. Of these, 60% had infiltrates consisting of lymphocytes and plasma cells, 24% had infiltrates consisting of neutrophils, and 16% had mixed infiltrates consisting of neutrophils, lymphocytes, and plasma cells. Lymphocytic-plasmacytic portal infiltrates were characterized by various degrees of bile duct proliferation a
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20

Li, Jianxu, Peng Guo, Masayuki Hirano, Brantley Herrin, and Max Cooper. "Cellular and molecular characterization of hagfish VLR-based adaptive immune system (VET2P.1043)." Journal of Immunology 192, no. 1_Supplement (2014): 207.15. http://dx.doi.org/10.4049/jimmunol.192.supp.207.15.

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Abstract Jawless vertebrates have an alternative adaptive immune system in which variable lymphocyte receptors (VLR) are somatically diversified through recombinatorial assembly of leucine-rich repeat cassettes during lymphocyte development. Three VLR loci (VLRA, VLRB, and VLRC) have been defined in lampreys and each is expressed by a distinct lymphocyte population. Lamprey VLRA and VLRC are expressed by T-like lineages of lymphocytes, whereas VLRB is expressed by a B-like lineage of lymphocytes, much like αβ T, γδ T and B cells in jawed vertebrates. Recently we have revised the nomenclature f
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21

Karki, Shovana, Sansar Babu Tiwari, and Alina Basnet. "Evaluation of tumor infiltrating lymphocytes in breast carcinomas." Journal of Pathology of Nepal 12, no. 2 (2022): 1909–12. http://dx.doi.org/10.3126/jpn.v12i2.47200.

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Background: Among the parameters that have a prognostic and/or predictive significance to therapeutic response, in the case of breast carcinoma, the study of tumor-infiltrating lymphocytes in breast carcinomas is emerging. The present study aimed to access the clinicopathological profiles of tumor-infiltrating lymphocytes in patients with primary breast carcinoma. Materials and Methods: Information was collected from the archive of the Department of Pathology, about invasive breast cancers diagnosed between April 2019 –March 2020. Hormone receptor status and Ki-67 index were assessed. For tumo
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22

Chu, Ming, Xiaobao Zhao, Lu Tang, et al. "The correlation of lymphocytes with disease progression of COVID-19." Medicine 102, no. 48 (2023): e36244. http://dx.doi.org/10.1097/md.0000000000036244.

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The aim of this study is to evaluate the potential of lymphocytes as biomarkers to predict the decline of coronavirus disease 2019 (COVID-19). Lymphocytes were counted in 164 moderate COVID-19 patients in Shenzhen, China. Among the moderate infected patients, 12.2% (20/164) progressed to severe cases after admission. Compared with the stable patients, the counts of lymphocytes, both total T lymphocytes and CD4+ T lymphocytes, in the severe patients, were lower. The aggravation of moderate infected patients was significantly associated with lymphocyte count (hazard ratio [HR] = 0.91; 95% confid
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23

Juedes, Amy E., Evelyn Rodrigo, Lisa Togher, Laurie H. Glimcher, and Matthias G. von Herrath. "T-bet Controls Autoaggressive CD8 Lymphocyte Responses in Type 1 Diabetes." Journal of Experimental Medicine 199, no. 8 (2004): 1153–62. http://dx.doi.org/10.1084/jem.20031873.

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The T-box transcription factor T-bet is known to control lineage commitment and interferon-γ production by T helper 1 (Th1) CD4 lymphocytes. We report here that T-bet is essential for development of CD8 lymphocyte-dependent autoimmune diabetes (type 1 diabetes [T1D]) in the rat insulin promoter–lymphocytic choriomeningitis virus (LCMV) transgenic model for virally induced T1D. In the absence of T-bet, autoaggressive (anti-LCMV) CD8 lymphocytes were reduced in number and produced less IFN-γ, but increased IL-2 compared with controls. Further analysis showed that T-bet intrinsically controls the
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24

Todorović, Jasna, Marko Dinčić, Jelena Nešović Ostojić, et al. "Differences in Chromatin Texture and Nuclear Fractal Dimension Between Hashimoto's and Lymphocytic Thyroiditis Lymphocytes." Microscopy and Microanalysis 25, no. 3 (2019): 762–68. http://dx.doi.org/10.1017/s1431927619000163.

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AbstractPrevious evidence suggested that lymphocytic thyroiditis (LT) was a variant of Hashimoto's thyroiditis (HT), thus the aim of the current study is to quantify structural changes in histological specimens taken from HT and LT patients. A total of 600 images containing a single lymphocyte nucleus (300 nuclei per group) were obtained from 20 patients with HT and LT. In order to quantify changes in the nuclear architecture of investigated lymphocytes, the fractal dimension (FD) and some gray-level co-occurrence matrix texture parameters (angular second moment, inverse difference moment, con
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25

Lucivero, G., G. Pierucci, and L. Bonomo. "Lymphocyte subsets in peripheral blood and pleural fluid." European Respiratory Journal 1, no. 4 (1988): 337–40. http://dx.doi.org/10.1183/09031936.93.01040337.

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We have examined the distribution of B and T lymphocytes, T-cells with helper/inducer (T4+) or suppressor/cytotoxic (T8+) phenotypes and a subset of cells with natural killer (NK) activity and positive for the Leu 7 (HNK-1) surface antigen in peripheral blood and in lymphocyte-rich pleural effusions of patients with tuberculosis or malignancies (mesothelioma and lung cancer with pleural metastasis). In individual patients, the percentages of T lymphocytes were uniformly higher in pleural effusions than in peripheral blood; however, lower percentages of B lymphocytes and cells positive for the
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26

Avila, Monica, Bryan M. Fellman, and Russell Broaddus. "Tumor lymphocytic infiltration impacts recurrence in endometrioid-type endometrial carcinoma." Journal of Clinical Oncology 38, no. 15_suppl (2020): e15239-e15239. http://dx.doi.org/10.1200/jco.2020.38.15_suppl.e15239.

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e15239 Background: Endometrial cancers that have mismatch repair deficiency are associated with higher numbers of tumor-associated lymphocytes, but the clinical significance of this observation is unknown. Our objective was to quantify CD3+ and CD8+ tumor lymphocytes of MMR intact (MMRi) and MMRd endometrioid-type endometrial carcinomas and determine if there was an association with survival. Methods: MMRd was defined as endometrial carcinomas with loss of MLH1 expression due to MLH1 gene methylation and determined by immunohistochemistry. MMRi was defined as positive expression of MLH1, MSH2,
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27

Baadsgaard, O., D. A. Fox, and K. D. Cooper. "Human epidermal cells from ultraviolet light-exposed skin preferentially activate autoreactive CD4+2H4+ suppressor-inducer lymphocytes and CD8+ suppressor/cytotoxic lymphocytes." Journal of Immunology 140, no. 6 (1988): 1738–44. http://dx.doi.org/10.4049/jimmunol.140.6.1738.

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Abstract In vivo exposure of human epidermis to UV abrogates the function of T6+DR+ Langerhans cells and induces the appearance of Ag-presenting T6-DR+ OKM5+ cells in the epidermis. Since UV exposure of murine skin results in Ts lymphocyte activation, we investigated the capacity of human epidermal cells (EC) harvested 3 days after in vivo UV exposure to activate regulatory and effector autologous T lymphocyte subsets. T lymphocytes were separated into CD8+ suppressor/cytotoxic lymphocytes and CD4+ helper/inducer lymphocytes by C lysis and panning. The CD4+ subset was further divided by using
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28

Gu, B. J., W. Y. Zhang, L. J. Bendall, I. P. Chessell, G. N. Buell, and J. S. Wiley. "Expression of P2X7purinoceptors on human lymphocytes and monocytes: evidence for nonfunctional P2X7receptors." American Journal of Physiology-Cell Physiology 279, no. 4 (2000): C1189—C1197. http://dx.doi.org/10.1152/ajpcell.2000.279.4.c1189.

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Lymphocytes from normal subjects and patients with B-chronic lymphocytic leukemia (B-CLL) show functional responses to extracellular ATP characteristic of the P2X7receptor (previously termed P2Z). These responses include opening of a cation-selective channel/pore that allows entry of the fluorescent dye ethidium and activation of a membrane metalloprotease that sheds the adhesion molecule L-selectin. The surface expression of P2X7receptors was measured in normal leucocytes, platelets, and B-CLL lymphocytes and correlated with their functional responses. Monocytes showed four- to fivefold great
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29

Maine, Christian J., John R. Teijaro, Kristi Marquardt, and Linda A. Sherman. "PTPN22 contributes to exhaustion of T lymphocytes during chronic viral infection." Proceedings of the National Academy of Sciences 113, no. 46 (2016): E7231—E7239. http://dx.doi.org/10.1073/pnas.1603738113.

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The protein encoded by the autoimmune-associated protein tyrosine phosphatase nonreceptor type 22 gene,PTPN22, has wide-ranging effects in immune cells including suppression of T-cell receptor signaling and promoting efficient production of type I interferons (IFN-I) by myeloid cells. Here we show that mice deficient in PTPN22 resist chronic viral infection with lymphocytic choriomeningitis virus clone 13 (LCMV cl13). The numbers and function of viral-specific CD4 T lymphocytes is greatly enhanced, whereas expression of the IFNβ-induced IL-2 repressor, cAMP-responsive element modulator (CREM)
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30

McCutcheon, Ian E., and Edward H. Oldfield. "Lymphocytic adenohypophysitis presenting as infertility." Journal of Neurosurgery 74, no. 5 (1991): 821–26. http://dx.doi.org/10.3171/jns.1991.74.5.0821.

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✓ The authors report a nulliparous patient presenting with infertility and hyperprolactinemia. She underwent transsphenoidal surgery after radiological investigation disclosed an enlarged pituitary gland which did not respond to bromocriptine therapy. The removed tissue had histological features consistent with adenohypophysitis including a diffuse lymphocytic infiltrate. The lymphocyte subsets present in the infiltrate were characterized by immunohistochemical methods to establish the contribution of different elements of the cellular immune response. Lymphocytes bearing CD4 antigen (helper-i
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31

Foa, R., M. Giovarelli, C. Jemma, et al. "Interleukin 2 (IL 2) and interferon-gamma production by T lymphocytes from patients with B-chronic lymphocytic leukemia: evidence that normally released IL 2 is absorbed by the neoplastic B cell population." Blood 66, no. 3 (1985): 614–19. http://dx.doi.org/10.1182/blood.v66.3.614.614.

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Abstract The capacity of T lymphocytes from patients with B cell chronic lymphocytic leukemia (B-CLL) to release interleukin 2 (IL 2) and interferon (IFN)-gamma was assessed following various stimuli. The spontaneous release of IL 2 and IFN-gamma was practically absent both with B-CLL and normal T lymphocytes. By contrast, after stimulation with phytohemagglutinin (PHA) or with PHA plus 12-O- tetradecanoylphorbol-13-acetate, the production of IL 2 and IFN-gamma by B-CLL T lymphocytes was similar to that of normal T lymphocytes, irrespective of the reversed T lymphocyte subset distribution (OKT
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32

Foa, R., M. Giovarelli, C. Jemma, et al. "Interleukin 2 (IL 2) and interferon-gamma production by T lymphocytes from patients with B-chronic lymphocytic leukemia: evidence that normally released IL 2 is absorbed by the neoplastic B cell population." Blood 66, no. 3 (1985): 614–19. http://dx.doi.org/10.1182/blood.v66.3.614.bloodjournal663614.

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The capacity of T lymphocytes from patients with B cell chronic lymphocytic leukemia (B-CLL) to release interleukin 2 (IL 2) and interferon (IFN)-gamma was assessed following various stimuli. The spontaneous release of IL 2 and IFN-gamma was practically absent both with B-CLL and normal T lymphocytes. By contrast, after stimulation with phytohemagglutinin (PHA) or with PHA plus 12-O- tetradecanoylphorbol-13-acetate, the production of IL 2 and IFN-gamma by B-CLL T lymphocytes was similar to that of normal T lymphocytes, irrespective of the reversed T lymphocyte subset distribution (OKT4/OKT8 ra
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33

Link, DC, and M. Zutter. "The proto-oncogene c-fgr is expressed in normal mantle zone B lymphocytes and is developmentally regulated during myelomonocytic differentiation in vivo." Blood 85, no. 2 (1995): 472–79. http://dx.doi.org/10.1182/blood.v85.2.472.472.

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Abstract The proto-oncogene c-fgr is a member of the c-src gene family of cytoplasmic tyrosine kinases. Previous studies have suggested that it is normally expressed in neutrophils, monocytes, macrophages, and natural killer cells. c-fgr is also expressed in the B cells of certain lymphoproliferative disorders, namely, Epstein-Barr virus-associated lymphoproliferative disease, and in chronic lymphocytic leukemia, but it has not previously been detected in normal or reactive human lymphoid tissue. In this study we have determined the pattern of p55c- fgr protein expression in normal human hemat
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34

Link, DC, and M. Zutter. "The proto-oncogene c-fgr is expressed in normal mantle zone B lymphocytes and is developmentally regulated during myelomonocytic differentiation in vivo." Blood 85, no. 2 (1995): 472–79. http://dx.doi.org/10.1182/blood.v85.2.472.bloodjournal852472.

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The proto-oncogene c-fgr is a member of the c-src gene family of cytoplasmic tyrosine kinases. Previous studies have suggested that it is normally expressed in neutrophils, monocytes, macrophages, and natural killer cells. c-fgr is also expressed in the B cells of certain lymphoproliferative disorders, namely, Epstein-Barr virus-associated lymphoproliferative disease, and in chronic lymphocytic leukemia, but it has not previously been detected in normal or reactive human lymphoid tissue. In this study we have determined the pattern of p55c- fgr protein expression in normal human hematopoietic
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35

Park, Suk W., Walter Royal, Richard D. Semba, Gordon W. Wiegand, and Diane E. Griffin. "Expression of Adhesion Molecules and CD28 on T Lymphocytes during Human Immunodeficiency Virus Infection." Clinical Diagnostic Laboratory Immunology 5, no. 4 (1998): 583–87. http://dx.doi.org/10.1128/cdli.5.4.583-587.1998.

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ABSTRACT Adhesion molecules, which play a major role in lymphocyte circulation, have not been well characterized in human immunodeficiency virus (HIV) infection. T-lymphocyte populations, including CD3, CD4, CD28, and adhesion molecules (L selectin, LFA-1, VLA-4, and ICAM-1) were measured by flow cytometry in a cross-sectional study of 100 HIV-infected and 49 HIV-seronegative adults. HIV-infected adults had lower numbers of CD3+ lymphocytes expressing L selectin (P < 0.0001) and VLA-4 (P < 0.01) and higher numbers of CD3+ lymphocytes expressing LFA-1bright (P < 0.002) than did HIV-neg
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36

Kurashige, Takashi, Tomomi Murao, Naoko Mine, et al. "Anti-HMGCR Antibody-Positive Myopathy Shows Bcl-2-Positive Inflammation and Lymphocytic Accumulations." Journal of Neuropathology & Experimental Neurology 79, no. 4 (2020): 448–57. http://dx.doi.org/10.1093/jnen/nlaa006.

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Abstract Anti-3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR) and antisignal recognition particle (SRP) antibodies are frequently associated with immune-mediated necrotizing myopathy (IMNM). However, the difference in clinical manifestations between anti-HMGCR and anti-SRP antibodies is unclear. HMGCR is an essential enzyme for cholesterol biosynthesis and is inhibited by statins that regulate apoptosis of Bcl-2-positive and beta chemokine receptor 4 (CCR4)-positive lymphoma cells. In this study, we aimed to clarify Bcl-2 and CCR4 expressions of lymphocytes in anti-HMGCR antibody-posit
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37

Tseluiko, A. I., V. F. Semiglazov, A. G. Kudaibergenova, A. S. Artem'eva, and R. M. Paltuev. "Prognostic and Predictive Capabilities of Tumor-Infiltrating Lymphocytes in Breast Cancer." Journal of Anatomy and Histopathology 13, no. 3 (2024): 83–88. http://dx.doi.org/10.18499/2225-7357-2024-13-3-83-88.

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The aim of the study is to evaluate the prognostic and predictive capabilities of tumorinfiltrating lymphocytes in breast cancer (BC); to study the prognostic value of T-cell (CD8+, CD3+) lymphocyte infiltration of the tumor and the level of T-regulatory (CD4+) lymphocytes; to study the prognostic and predictive value of the expression of proteins Forkhead Box Protein 3, check-point PD-1, PDL1. Materials and methods. The content of tumor-infiltrating lymphocytes and their quantitative ratio and correlation with regulatory genes were assessed. Archival material was used in the work. The study i
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38

Peng, Cong, Zongwei Guo, Yue Zhao, Rui Li, Liang Wang, and Wenping Gong. "Effect of Lymphocyte Subsets on Bone Density in Senile Osteoporosis: A Retrospective Study." Journal of Immunology Research 2022 (October 26, 2022): 1–11. http://dx.doi.org/10.1155/2022/3337622.

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Background. Several studies have shown that lymphocyte subsets can mediate the occurrence of osteoporosis (OP); however, the predictive ability of lymphocyte subsets in senile OP has not been elucidated. Purpose. To investigate the ability of lymphocyte subsets to predict senile osteoporosis (OP). Methods and Materials. This study included 44 patients with senile OP and 44 without OP. Dual-energy X-ray absorptiometry (DEXA) was used to determine bone mineral density (BMD). Flow cytometry was used to analyze the absolute counts of the lymphocyte subsets and cytokine levels. Finally, the correla
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39

Loffredo, John T., Eva G. Rakasz, Juan Pablo Giraldo, et al. "Tat28-35SL8-Specific CD8+ T Lymphocytes Are More Effective than Gag181-189CM9-Specific CD8+ T Lymphocytes at Suppressing Simian Immunodeficiency Virus Replication in a Functional In Vitro Assay." Journal of Virology 79, no. 23 (2005): 14986–91. http://dx.doi.org/10.1128/jvi.79.23.14986-14991.2005.

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ABSTRACT Epitope-specific CD8+ T lymphocytes may play an important role in controlling human immunodeficiency virus (HIV)/simian immunodeficiency virus replication. Unfortunately, standard cellular assays do not measure the antiviral efficacy (the ability to suppress virus replication) of CD8+ T lymphocytes. Certain epitope-specific CD8+ T lymphocytes may be better than others at suppressing viral replication. We compared the antiviral efficacy of two immunodominant CD8+ T lymphocyte responses—Tat28-35SL8 and Gag181-189CM9—by using a functional in vitro assay. Viral suppression by Tat-specific
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40

Tan, J., B. Deleuran, B. Gesser, et al. "Regulation of human T lymphocyte chemotaxis in vitro by T cell-derived cytokines IL-2, IFN-gamma, IL-4, IL-10, and IL-13." Journal of Immunology 154, no. 8 (1995): 3742–52. http://dx.doi.org/10.4049/jimmunol.154.8.3742.

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Abstract There has been a number of conflicting reports regarding the T lymphocyte chemotactic activities of several cytokines. IL-2 and IFN-gamma are known to promote augmentation of immune inflammation, whereas IL-4, IL-10, and IL-13 display immunomodulatory effects on inflammatory cells including inhibition of cytokine production. Their effects on chemotaxis of inflammatory cells are unknown. We observed that IL-1 alpha could induce chemotaxis both in overnight cultured and anti-CD3 mAb-activated T lymphocytes and that overnight culture and anti-CD3 activation increase the number of IL-1R o
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41

Steeber, D. A., N. E. Green, S. Sato, and T. F. Tedder. "Lyphocyte migration in L-selectin-deficient mice. Altered subset migration and aging of the immune system." Journal of Immunology 157, no. 3 (1996): 1096–106. http://dx.doi.org/10.4049/jimmunol.157.3.1096.

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Abstract Lymphocyte trafficking across high endothelial venules (HEV) of peripheral lymph nodes (PLN) is dependent upon lymphocyte expression of L-selectin. Mice that lack this adhesion molecule provide an opportunity to determine the long-term role of L-selectin-mediated migration in the maintenance of leukocyte subpopulations. HEV in L-selectin-deficient mice were phenotypically, morphologically, and functionally comparable with wild-type mice, although there was a 70 to 90% reduction in the number of lymphocytes within PLN. These lymphocytes most likely entered PLN through the afferent lymp
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42

Broström, Hans, Marita Troye-Bomberg, and Peter Perlmann. "Generation of in vitro natural cytotoxicity of horse lymphocytes against sarcoid-derived tumor cells not expressing major histocompatibility complex antigens." American Journal of Veterinary Research 57, no. 7 (1996): 992–99. http://dx.doi.org/10.2460/ajvr.1996.57.07.992.

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Abstract Objective To analyze in vitro lymphocyte-mediated immune responses of horses with sarcoids against allogeneic sarcoid cells containing endogenous retrovirus but not expressing major histocompatibility complex antigens. Design Lymphocyte-mediated immune reactions were assessed by means of proliferative responses in mixed lymphocyte tumor cell culture (MLTC) assay and lymphocyte-mediated cytotoxicity against various equine target cells. Animals 12 horses with sarcoid tumors and 15 control horses. Procedure Blood lymphocytes were cocultured in MLTC with allogeneic sarcoid cells (Mc-1, Ba
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43

Komal, Dhakane* Randhawan B. B. Harish Changediya Pruthviraj Awate Naman Gandhi. "Key Treatment, Principles, and Recent Updates in the Management of Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma." International Journal of Pharmaceutical Sciences 2, no. 12 (2024): 453–62. https://doi.org/10.5281/zenodo.14274926.

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Chronic lymphocytic leukemia (CLL)/small lymphocytic lymphoma (SLL) is a common indolent B-cell malignancy characterized by the accumulation of mature B lymphocytes in the blood, bone marrow, and lymphoid tissues. The management of CLL/SLL has evolved significantly in recent years, with advances in targeted therapies and novel immunotherapies. Chronic lymphocytic leukemia (CLL) is a type of cancer that affects white blood cells called lymphocytes. Lymphocytes are part of the immune system and help fight infections. In Chronic Lymphocytic Leukemia, the lymphocytes grow and accumulate abnormally
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44

Mathur, A., D. H. Conrad, and R. G. Lynch. "Characterization of the murine T cell receptor for IgE (Fc epsilon RII). Demonstration of shared and unshared epitopes with the B cell Fc epsilon RII." Journal of Immunology 141, no. 8 (1988): 2661–67. http://dx.doi.org/10.4049/jimmunol.141.8.2661.

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Abstract Antigenic relationships between the low affinity Fc epsilon R present on murine B and T lymphocytes were studied. A rat mAb (B3B4) and two polyclonal antisera produced by immunizing with the murine B lymphocyte Fc epsilon RII were examined for their ability to inhibit binding of IgE to murine B or T lymphocytes, using an IgE-specific rosette assay. One polyclonal antiserum (goat-anti-mouse Fc epsilon R) inhibited binding of IgE to both B and T lymphocytes, whereas another polyclonal antiserum (rabbit-anti-mouse Fc epsilon R) and the rat mAb inhibited the binding of IgE to B lymphocyte
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45

Issekutz, T. B. "Effects of six different cytokines on lymphocyte adherence to microvascular endothelium and in vivo lymphocyte migration in the rat." Journal of Immunology 144, no. 6 (1990): 2140–46. http://dx.doi.org/10.4049/jimmunol.144.6.2140.

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Abstract The first step in the migration of lymphocytes out of the blood is adherence of lymphocytes to endothelial cells (EC) in the postcapillary venule. It is thought that in inflammatory reactions cytokines activate the endothelium to promote lymphocyte adherence and migration into the inflammatory site. Injection of IFN-gamma, IFN-alpha/beta, and TNF-alpha into the skin of rats stimulated the migration of small peritoneal exudate lymphocytes (sPEL) into the injection site, and these cytokines mediated lymphocyte recruitment to delayed-type hypersensitivity, sites of virus injection, and i
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46

Tolstykh, E. I., M. O. Degteva, and A. V. Akleyev. "Estimation of lymphocyte radiation doses after the ingestion of radionuclides of different tropicity." Radiatsionnaya Gygiena = Radiation Hygiene 14, no. 3 (2021): 18–28. http://dx.doi.org/10.21514/1998-426x-2021-14-3-18-28.

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Assessment of the lymphocyte doses is relevant for solving a number of radiobiological problems, including the risk assessment of hemoblastosis (leukemia, multiple myeloma, lymphoma etc.), as well as the use of circulating lymphocytes as “natural biodosimeters”. The latter is because the frequency of chromosomal aberrations occurring in lymphocytes following radiation exposure is proportional to the accumulated dose. Assessment of doses to the circulating lymphocytes requires due account of: first, the dose accumulated by the lymphocyte progenitors in the red bone marrow; and second, the dose
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47

Kenney, D., L. Cairns, E. Remold-O'Donnell, J. Peterson, FS Rosen, and R. Parkman. "Morphological abnormalities in the lymphocytes of patients with the Wiskott-Aldrich syndrome." Blood 68, no. 6 (1986): 1329–32. http://dx.doi.org/10.1182/blood.v68.6.1329.1329.

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Abstract Lymphocytes from 18 patients with the Wiskott-Aldrich Syndrome (WAS) were examined by scanning electron microscopy (SEM). Most peripheral blood lymphocytes from normal individuals are covered with slender microvillus projections, but a large proportion of lymphocytes from WAS patients were found to be relatively devoid of microvilli. A lymphocyte morphology scoring system was developed to quantify the density of microvilli: Grade 4 classified those lymphocytes with greater than 75% of the surface covered with microvilli with progressive decrements to grade 1, which were those without
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48

Kenney, D., L. Cairns, E. Remold-O'Donnell, J. Peterson, FS Rosen, and R. Parkman. "Morphological abnormalities in the lymphocytes of patients with the Wiskott-Aldrich syndrome." Blood 68, no. 6 (1986): 1329–32. http://dx.doi.org/10.1182/blood.v68.6.1329.bloodjournal6861329.

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Lymphocytes from 18 patients with the Wiskott-Aldrich Syndrome (WAS) were examined by scanning electron microscopy (SEM). Most peripheral blood lymphocytes from normal individuals are covered with slender microvillus projections, but a large proportion of lymphocytes from WAS patients were found to be relatively devoid of microvilli. A lymphocyte morphology scoring system was developed to quantify the density of microvilli: Grade 4 classified those lymphocytes with greater than 75% of the surface covered with microvilli with progressive decrements to grade 1, which were those without microvill
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49

Milicevic, Novica. "T lymphocytes are necessary for the peripheral phase of B lymphocyte maturation." Srpski arhiv za celokupno lekarstvo 136, Suppl. 2 (2008): 166–70. http://dx.doi.org/10.2298/sarh08s2166m.

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Until recently, B lymphocyte maturation was considered to be independent of the thymus and T lymphocytes. However, using nude animals, which lack the functional thymus, we have shown that T lymphocytes are required for the peripheral phase of B lymphocyte maturation. We showed that the proportion of immature B lymphocyte subsets (CD90highIgMhigh and CD90highIgMlow) was significantly increased, whereas that of mature B lymphocyte subsets (CD90?IgMlow and CD90?IgMhigh) was decreased in the peripheral blood and lymph nodes of nude rats. In addition, the expression of functionally important surfac
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50

Froom, P., B. Ramot, M. Biniaminov, and D. Douer. "Production of burst-promoting activity by monoclonal antibody defined malignant T lymphocytes from patients with lymphocytic leukemia and lymphoma." Blood 65, no. 4 (1985): 997–1001. http://dx.doi.org/10.1182/blood.v65.4.997.997.

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Abstract We tested conditioned media from 12 patients with T lymphocyte neoplasms and four T cell lines for their ability to stimulate the in vitro growth of erythroid-burst-forming units (BFU-E) from bone marrow mononuclear cells in a methylcellulose culture system. Nine patients suffered from acute lymphocytic leukemia, two from chronic lymphocytic leukemia, and one from non-Hodgkin's lymphoma. The T lymphocytes were characterized by a series of monoclonal antibodies and their stage of development was correlated with their ability to produce burst- promoting activity (BPA). Conditioned media
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