Academic literature on the topic 'Biphasic pattern'

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Journal articles on the topic "Biphasic pattern"

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Kovtyuk, N., Yu Nechytailo, D. Nechytailo та T. Mikhieieva. "Стереотипы сна у детей школьного возраста". Педиатрия. Восточная Европа, № 2 (17 червня 2021): 217–23. http://dx.doi.org/10.34883/pi.2021.9.2.006.

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Introduction. Sleep is very important to human health and well-being, and sleep loss and disorders are associated with a wide range of adverse health effects, especially in children.Purpose. To assess sleep peculiarities and sleep patterns in children.Materials and methods. In total, 562 children aged 10–18 years were examined. Assessment of anthropometric data, nutrition, physical activity, sleep peculiarities and quality, family and socioeconomic data etc. was conducted. Circadian rhythm chronotype was also assessed with the standard questionnaire for determination of the chronotypes (mornin
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Recho, Pierre, Adrien Hallou, and Edouard Hannezo. "Theory of mechanochemical patterning in biphasic biological tissues." Proceedings of the National Academy of Sciences 116, no. 12 (2019): 5344–49. http://dx.doi.org/10.1073/pnas.1813255116.

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The formation of self-organized patterns is key to the morphogenesis of multicellular organisms, although a comprehensive theory of biological pattern formation is still lacking. Here, we propose a minimal model combining tissue mechanics with morphogen turnover and transport to explore routes to patterning. Our active description couples morphogen reaction and diffusion, which impact cell differentiation and tissue mechanics, to a two-phase poroelastic rheology, where one tissue phase consists of a poroelastic cell network and the other one of a permeating extracellular fluid, which provides
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Saeed, Zeba, Zainab Hasan, and Maria Atif. "SLEEP PATTERNS OF MEDICAL STUDENTS." Professional Medical Journal 22, no. 07 (2015): 919–23. http://dx.doi.org/10.29309/tpmj/2015.22.07.1183.

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Objectives: To identify sleep patterns of medical students and determinethe relationship between sleep habits and academic performance. Background: Humanbeings adopt three different sleeping patterns; monophasic, biphasic and polyphasic. Sleepallows synaptic molding to return by developing faster memory union. When such memoryprocessing is not present, memory keeping is reduced which can have an adverse effecton the academic performance of students. Professional education in the field of medicinerequires learning a greater amount and variety of syllabi to practice as a satisfactory medicalgrad
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Hering, Angelkort, Keck, Wilde, and Amann. "Long-term outcome of successful percutaneous transluminal angioplasty of the fibular artery in diabetic foot syndrome and single-vessel calf perfusion depends on doppler wave pattern at the forefoot." Vasa 39, no. 1 (2010): 67–75. http://dx.doi.org/10.1024/0301-1526/a000007.

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Background: In the diabetic foot syndrome (DFS) due to peripheral artery disease, the fibular artery is often the only vessel which can be revascularised. Because the fibular artery does not have a direct connection to the plantar arch, the clinical result of fibular artery PTA is dependent upon the extent of collateralization at the ankle. Therefore, successful PTA of the fibular artery with resulting biphasic doppler waves at the ankle can lead to either biphasic or monophasic post-occlusive doppler wave patterns at the forefoot. We evaluated prospectively the association of the forefoot dop
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Shishehbor, Farideh, Helen M. Roche, and Michael J. Gibney. "The effect of acute carbohydrate load on the monophasic or biphasic nature of the postprandial lipaemic response to acute fat ingestion in human subjects." British Journal of Nutrition 80, no. 5 (1998): 411–18. http://dx.doi.org/10.1017/s0007114598001470.

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Previous studies in this laboratory have elicited a monophasic response in postprandial plasma triacylglycerol (TAG) level with fat intakes of 0.5 g fat/kg body weight accompanied by about 17 g carbohydrate as lactose. Recent studies involving the same level of fat with a higher level of carbohydrate, 136 g of which 60 g was sucrose, appeared to elicit a biphasic response. The present study compared these two test meals and showed a significant meal × time interaction for plasma total TAG (P = 0.0228) reflecting a monophasic response with the lower-carbohydrate test meal. The higher-carbohydra
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Ruddell, A., and M. Jacobs-Lorena. "Biphasic pattern of histone gene expression during Drosophila oogenesis." Proceedings of the National Academy of Sciences 82, no. 10 (1985): 3316–19. http://dx.doi.org/10.1073/pnas.82.10.3316.

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Hoedemaekers, Cornelia W., Marcel van Deuren, and Johannes G. van der Hoeven. "Complement Activation After Cardiac Surgery Follows a Biphasic Pattern." Annals of Thoracic Surgery 86, no. 5 (2008): 1723. http://dx.doi.org/10.1016/j.athoracsur.2008.05.029.

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Ikegami, Tetsunori, Michael Ji, Naoyuki Fujimura, Jenny V. Suneby Jagers, Teresa M. Kieser, and Paul A. Easton. "Costal and crural diaphragm function during sustained hypoxia in awake canines." Journal of Applied Physiology 126, no. 4 (2019): 1117–28. http://dx.doi.org/10.1152/japplphysiol.00242.2018.

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In humans and other mammals, isocapnic hypoxia sustained for 20–60 min exhibits a biphasic ventilation pattern: initial increase followed by a significant ventilatory decline (“roll-off”) to a lesser intermediate plateau. During sustained hypoxia, the mechanical action and activity of the diaphragm have not been studied; thus we assessed diaphragm function in response to hypoxic breathing. Thirteen spontaneously breathing awake canines were exposed to moderate levels of sustained isocapnic hypoxia lasting 20–25 min (80 ± 2% pulse oximeter oxygen saturation). Breathing pattern and changes in mu
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Yamaguchi, Ayako, David Gooler, Amy Herrold, Shailja Patel, and Winnie W. Pong. "Temperature-Dependent Regulation of Vocal Pattern Generator." Journal of Neurophysiology 100, no. 6 (2008): 3134–43. http://dx.doi.org/10.1152/jn.01309.2007.

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Vocalizations of Xenopus laevis are generated by central pattern generators (CPGs). The advertisement call of male X. laevis is a complex biphasic motor rhythm consisting of fast and slow trills (a train of clicks). We found that the trill rate of these advertisement calls is sensitive to temperature and that this rate modification of the vocal rhythms originates in the central pattern generators. In vivo the rates of fast and slow trills increased linearly with an increase in temperature. In vitro a similar linear relation between temperature and compound action potential frequency in the lar
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Zhu, Xuan, Liang Shi, Pengcheng Li, and Jinling Lu. "Cerebral blood flow patterns induced by photoactivation based on laser speckle contrast imaging." Biomedical Optics Express 15, no. 12 (2024): 6739. http://dx.doi.org/10.1364/boe.541444.

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Neurovascular coupling (NVC) is crucial for maintaining brain function and holds significant implications for diagnosing neurological disorders. However, the neuron type and spatial specificity in NVC remain poorly understood. In this study, we investigated the spatiotemporal characteristics of local cerebral blood flow (CBF) driven by excitatory (VGLUT2) and inhibitory (VGAT) neurons in the mouse sensorimotor cortex. By integrating optogenetics, wavefront modulation technology, and laser speckle contrast imaging (LSCI), we achieved precise, spatially targeted photoactivation of type-specific
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Dissertations / Theses on the topic "Biphasic pattern"

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Alqurashi, Waleed. "Management of Children with Anaphylaxis in the Emergency Department: Practice Pattern and Prediction of Biphasic Reactions." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32101.

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This research aims to assess the practice pattern of Canadian emergency physicians for management of anaphylaxis and investigate the clinical predictors for biphasic reactions in children with anaphylaxis. We conducted two studies: a national survey and a multicenter Health Records (HR) review of emergency department visits. Of the 608 physicians surveyed, 340 (56%) responded. Overall, 211(62%) of the physicians correctly agreed that both hypothetical scenarios in the survey were consistent with anaphylaxis, and 206(61%) chose to administer epinephrine. In our HR review, we found five independ
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Books on the topic "Biphasic pattern"

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Lei, Yuan. Ventilator Control Parameters. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780198784975.003.0009.

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‘Ventilator Control Parameters’ looks at the individual ventilator settings, which are largely used to quantitatively define the properties of mechanical breaths. Following on from the previous discussion of essential variables, this chapter describes their implementation in the form of controls. This chapter begins by discussing the confusing and non-standardized terminology used for control parameters, providing a list of controls used on major ventilators. Common controls include rate, pressure and flow triggers, inspiratory time, I:E ratio, peak flow, flow cycle, tidal volume, pressure con
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O’Neill, Brian P., Jeffrey Allen, Mitchell S. Berger, and Rolf-Dieter Kortmann. Astrocytic tumours: pilocytic astrocytoma, pleomorphic xanthoastrocytoma, and subependymal giant cell astrocytoma. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780199651870.003.0002.

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Pilocytic astrocytoma (PA) (World Health Organization (WHO) grade I). A relatively circumscribed, slow-growing, often cystic astrocytoma occurring in children and young adults, histologically characterized by a biphasic pattern with varying proportions of compacted bipolar cells associated with Rosenthal fibres and loose-textured multipolar cells associated with microcysts and eosinophilic granular bodies. Most PAs are localized, macrocystic, and only marginally infiltrative. However some PAs, such as those arising in the optic pathways, are rarely cystic and may have an extensive infiltrative
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Skipworth, James R. A., and Stephen P. Pereira. Pathophysiology, diagnosis, and assessment of acute pancreatitis. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0190.

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The incidence of acute pancreatitis continues to increase, but the attendant mortality has not decreased for >30 years. The pathogenesis remains poorly understood, but the initial mechanism appears to be intracellular activation of pancreatic enzymes, with micro- and macrovascular dysfunction, in conjunction with a systemic inflammatory response acting as a key propagating factor and determinant of severity. A multitude of causes or initiators exist, but there is a common pathophysiological pathway. The use of conventional scoring systems, combined with repeated clinical and laboratory asse
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Book chapters on the topic "Biphasic pattern"

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Purdy, John R., and Mark Cheplick. "Nonlinear Soil Dissipation Kinetics: The Use of a Set of Simple First-Order Processes To Describe a Biphasic Degradation Pattern." In ACS Symposium Series. American Chemical Society, 2014. http://dx.doi.org/10.1021/bk-2014-1174.ch009.

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Greyson, Bruce. "Posttraumatic Stress Symptoms Following Near-Death Experiences." In Social Work Diagnosis In Contemporary Practice. Oxford University PressNew York, NY, 2005. http://dx.doi.org/10.1093/oso/9780195168785.003.0035.

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Abstract More than half of all Americans are exposed to a life-threatening traumatic event at least once, and one-quarter of Americans more than once (Kessler, Sonnega, Bromet, Hughes, & Nelson, 1995). Although there are many possible psychological and biological responses to traumatic events, almost half of those exposed to such events may develop the particular avoidance and hyperarousal symptoms of posttraumatic stress disorder (PTSD) (Kessler et al., 1995). Many of the symptoms of PTSD overlap with those of depressive and anxiety disorders. What distinguishes PTSD is a biphasic pattern
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Lee-Chiong, Teofilo. "Sleep In Infants, Children and Adolescents." In Sleep Medicine: Essentials and Review. Oxford University PressNew York, NY, 2008. http://dx.doi.org/10.1093/oso/9780195306590.003.0013.

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Abstract In many instances, a child is not merely a small adult. This is particularly relevant with regards to sleep and sleep disorders in the infant, child, and adolescent, in whom there are many significant differences from that of the adult. Nonetheless, there are also many similarities in the clinical features, pathophysiology, evaluation and therapy of sleep disorders between children and adults. This chapter, rather than repeating what has been described in earlier sections that dealt with adults, will, instead, emphasize the differences between these two age groups. The physiology, reg
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Maurer, Tilman, Christine Lemes, and Karl-Heinz Kuck. "Atrial flutter: management." In ESC CardioMed. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198784906.003.0519.

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Atrial flutter (AFL) is the most common macroreentry tachycardia in patients with and without structural heart disease. In the majority of cases, the arrhythmia is associated with a pre-existing comorbidity such as heart failure or lung disease. AFL refers to an electrocardiogram (ECG) pattern of a regular tachycardia with an atrial rate of more than 240 beats per minute and a lack of an isoelectric baseline between deflections. The most frequent form is termed ‘common’ or ‘typical’ if biphasic waves are present in the inferior leads, resembling a ‘saw-tooth’ pattern. Common AFL is diagnosed i
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Dunn, Kelly E., H. Elizabeth Bird, and Caitlyn J. Durgin. "Fentanyl." In The Oxford Handbook of Opioids and Opioid Use Disorder. Oxford University Press, 2023. http://dx.doi.org/10.1093/oxfordhb/9780197618431.013.13.

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Abstract Fentanyl is a potent synthetic opioid that was engineered to have good lipid solubility to aid its use in medicinal settings. Fentanyl is relatively easy to synthesize and for this and other reasons it has infiltrated the illicit heroin supply throughout North America. Fentanyl is unique relative to other opioids; it has a different pharmacodynamic and pharmacokinetic profile of effects. These characteristics contribute to its heightened side effect profile, which includes opioid-related respiratory depression, as well as additional medical comorbidities. This chapter reviews a brief
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Hornick, Jason L. "Biphasic Tumors and Tumors With Mixed Patterns." In Practical Soft Tissue Pathology: a Diagnostic Approach. Elsevier, 2019. http://dx.doi.org/10.1016/b978-0-323-49714-5.00009-0.

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Nascimento, Alessandra F., and Jason L. Hornick. "Biphasic Tumors and Tumors with Mixed Patterns." In Practical Soft Tissue Pathology: A Diagnostic Approach. Elsevier, 2013. http://dx.doi.org/10.1016/b978-1-4160-5455-9.00009-0.

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Lee-Chiong, Teofilo. "Medications and Their Effects on Sleep." In Sleep Medicine: Essentials and Review. Oxford University PressNew York, NY, 2008. http://dx.doi.org/10.1093/oso/9780195306590.003.0016.

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Abstract Many medications affect the central nervous system (CNS) and can alter the patterns of sleep and wakefulness. Others can induce sleep disorders (eg, nightmares, periodic limb movements of sleep or restless legs syndrome) or exacerbate them (eg, obstructive sleep apnea). Some agents can cause both insomnia and excessive sleepiness in different individuals, or in the same individual under different circumstances. These can be a primary therapeutic effect of the drug, a withdrawal effect, or an adverse reaction. Each medication possesses class and agent-specific effects on sleep. Alcohol
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Conference papers on the topic "Biphasic pattern"

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Menkiti, Ogechukwu R., Huayan Zhang, Honghong Sun, JunJie Mei, Yuhong Liu, and Scott G. Worthen. "Neonal Mice Demonstrate A Biphasic Pattern Of Inflammatory Response To Inhaled LPS." In American Thoracic Society 2010 International Conference, May 14-19, 2010 • New Orleans. American Thoracic Society, 2010. http://dx.doi.org/10.1164/ajrccm-conference.2010.181.1_meetingabstracts.a5761.

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de Hollander, Gilles, Eline R. Kupers, Jan W. Brascamp, and Tomas H. Knapen. "A biphasic temporal pattern in pupil size around perceptual switches in binocular rivalry." In 2018 Conference on Cognitive Computational Neuroscience. Cognitive Computational Neuroscience, 2018. http://dx.doi.org/10.32470/ccn.2018.1084-0.

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Koyama, M., F. Katabami, K. Matsuno, et al. "THROMBIN-INDUCED BIPHASIC Ca2+TRANSIENT DETECTED BY FURA-2 FLUORESCENCE WAS COUPLED WITH BIPHASIC Ca2+ UPTAKE IN PLATELETS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644476.

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In the last congress on Thrombosis and Haemostasis in SanDiego we presented the biphasic Ca2+transient in thrombin-stimulated platelets detected by quin2. This time we tried to measure Ca2+ transient in platelets using other Ca2+indicators such as fura-2 and aequorin. In order to evaluate the contribution of increased Ca2+ influx across the plasma-membrane in elevating cytosolic free Ca concentration on platelet activation, 45 Ca2+uptake was measured simultaneouslyby silicon-oil centrifugation method with or without 5 mM EGTA treatment. Such EGTA treatment was intended to remove the entire 45C
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Lu, C., S. X. Wang, C. Chen, et al. "Experimental Investigation of Infilled-Shear Fractures Conductivity in Shale Reservoirs." In APOGCE 2024. SPE, 2024. http://dx.doi.org/10.2118/221242-ms.

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Abstract The study and assessment of flow conductivity within infilled-shear fractures play a pivotal role in guiding the development of shale gas resources. This paper presents an investigation using shale reservoir rock samples from the Longmaxi Formation. We employed a novel infilled-shear seepage coupling experimental system, developed in-house, to perform nitrogen flow tests under stress seepage coupling conditions. Our findings reveal that the incorporation of proppants mitigates the impact of fracture roughness, and the effect of fracture morphology on conductivity is primarily evident
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Chandran, Preethi L., Triantafyllos Stylianopoulos, and Victor H. Barocas. "Biphasic Structure-Based Modeling of Tissue Equivalent Mechanics." In ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-176616.

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The collagen gel has been extensively studied as an in vitro model for soft tissue mechanics, cell-ECM interactions, and as a prototypical bioartificial tissue; a model of gel mechanics from a microstructural perspective is important for all of these [1]. An earlier experimental study recorded the microstructural rearrangements during confined compression by interpreting the evolution of birefringence patterns within the gel [2]. The patterns suggested that strain was transmitted by fiber rotation at interconnections and was non-uniform due to fluid permeation resistance, indicating that macro
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Sarver, Nava, and George A. Ricca. "SUSTAINED EXPRESSION OF FULL LENGTH AND VARIANT RECOMBINANT FACTOR VIII IN GENETICALLY ENGINEERED CELLS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643875.

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A major effort is presently underway to provide factor VIII (FVIII) in a form free of viral pathogens via a recombinant DNA approach. We have constructed two chimeric FVIII cDNA vectors based on the bovine papillomavirus mammalian expression system. The first vector (FVIII) contained a full length FVIII cDNA; the second vector (AFVIII) contained a cDNA insert with an extensive deletion, corresponding to amino acid residues 747 to 1560 in the region encoding the "B" domain. This internal region is removed during activation of the parental FVIII molecule and is believed not to be required for co
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Sarvestani, Alireza. "A Theoretical Analysis for the Effect of Substrate Elasticity on Cellular Adhesion." In ASME 2010 First Global Congress on NanoEngineering for Medicine and Biology. ASMEDC, 2010. http://dx.doi.org/10.1115/nemb2010-13311.

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Cell behavior is mediated by variety of physiochemical properties of extracellular matrix (ECM). Material composition, surface chemistry, roughness, and distribution pattern of cell adhesive proteins are among the ECM properties which are known to modulate various cellular physiological functions. Mechanical stiffness of ECM in particular is found to be a major regulator for multiple aspects of cellular function. Experiments show that cells in general, exhibit an apparent adhesion preference for stiffer substrates with a larger projected spread area with increasing the substrate stiffness. In
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Aziz, M. Fayez, Philemon Chan, Johan S. Osorio, Bushra F. Minhas, Vaisak Parekatt, and Gustavo Caetano-Anolles. "Stress induces biphasic-rewiring and modularization patterns in the metabolomic networks of Escherichia coli." In 2012 IEEE International Conference on Bioinformatics and Biomedicine (BIBM). IEEE, 2012. http://dx.doi.org/10.1109/bibm.2012.6392626.

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Camacho, Ana Thereza da Cunha Uchoa, Ana Paula Pontes Rodrigues, Maria Clara Sousa Peixoto, Rebeca de Sousa França, and Lívia Nazaré Soares Silva. "RECURRENT PHYLLODES TUMOR MALIGNANCY: A CASE REPORT." In XXIV Congresso Brasileiro de Mastologia. Mastology, 2022. http://dx.doi.org/10.29289/259453942022v32s1070.

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Fibroepithelial tumors of the breast are part of a heterogeneous group of biphasic neoplasms, which include common fibroadenomas (FA) and phyllodes tumors (PTs). The PT is a rare fibroepithelial tumor that is histologically divided into three grades: benign, malignant, or borderline. Although only about 10% of these tumors are malignant, even benign tumors are prone to local recurrence and can become very large in size. The standard management of PT is surgical excision with negative surgical margins, due to the propensity for local recurrence. Therefore, the report about this type of tumor wi
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