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Journal articles on the topic 'Chorgun'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Nedelkin, Evgeniy, Alexander Khrustalev, Anna Babenko, and Sergey Slepchenko. "Results of Archaeoparasitological and Palynological Analyzes of the Contents of the Sewage Drain of the Chorgun Tower (South-Western Crimea)." Stratum plus. Archaeology and Cultural Anthropology, no. 6 (December 30, 2021): 377–89. http://dx.doi.org/10.55086/sp216377389.

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The article presents the results of an archaeoparasitological and palynological study of a sample taken from the sewage drain of the Chorgun Tower. This is a fortification on the territory of the village of Chernorechie (South-Western Crimea). According to archaeological research, the construction of the keep dates back to the third quarter of the 15th century. Four types of eggs of intestinal parasites infecting humans and synanthropic animals were identified in the sample. Regarding parasitic and infectious gastrointestinal diseases, human whipworm and roundworm eggs found in the sample are

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E.V., Nedelkin. "К истории села Черноречье в Средние века / To the history of the Chernorechie village in the Middle Ages". Materialy po Arheologii i Istorii Antičnogo i Srednevekovogo Kryma (Materials in Archaeology and History of Ancient and Medieval Crimea) 7 (31 грудня 2015): 184–90. https://doi.org/10.5281/zenodo.165081.

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В данной статье рассмотрен один из важных аспектов истории с. Черноречье (Чоргунь), находящегося на территории города федерального значения Севастополя, — средневековый период его существования. Автор привел аргументы, которые свидетельствуют о существовании этого селения уже в XV в. на территории греко-готского княжества Феодоро. Затем последовательно рассмотрен слабо представленный в письменных и археологических источниках период истории этого населенного пункта с XV в. до вхождения Крыма в состав Российской империи в 1783 г. / In this article author explored one of the most important aspect

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Неделькин, Е.В. "Крымское село Черноречье в 1944–1962 гг." Причерноморье. История, политика, культура Серия Б. Новая и новейшая история, № XX(IX) (2017): 76–89. https://doi.org/10.5281/zenodo.345097.

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<em>Статья посвящена изучению истории села Черноречье (быв. Чоргунь), находящегося на территории города федерального значения Севастополя, в 1944–1962 гг. Автор на основе архивных данных изучил, как в одном из самых крупных до Великой Отечественной войны сел Балаклавского района г. Севастополя протекали процессы послевоенного восстановления инфраструктуры и народного хозяйства, заселения региона населением из различных областей РСФСР и УССР, функционирования колхозов. При написании работы использованы материалы Архива города Севастополя.</em> This article deals with the history of the village

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Неделькин, Е.В. "Село Черноречье (Чоргунь) в османский период (1475–1774 годы)". ПРИЧЕРНОМОРЬЕ. История, политика, культура. 2017 Серия А. Античность и Средневековье, № XXII(VII) (2017): 106–26. https://doi.org/10.5281/zenodo.849891.

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<em>Статья посвящена изучению истории села Черноречье (быв. Чоргунь), находящегося на территории города федерального значения Севастополя, в период вхождения данного региона в состав Османской империи. На основе источников и литературы изучены политико-административные, экономические, социальные и этноконфессиональные процессы, связанные с селением со времени завоевания османами греко-готского княжества Феодоро и генуэзских владений в 1475 г. до передачи владений Османской империи на полуострове независимому Крымскому ханству в 1774 г.</em> <em>This article deals with the history of Chernorech

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Khrapunov, Nikita. "A Tour of Edward Daniel Clarke and Peter Simon Pallas to the South-Western Crimea in September 1800." Materials in Archaeology, History and Ethnography of Tauria, XХVII (December 15, 2022): 592–627. http://dx.doi.org/10.29039/2413-189x.2022.27.592-627.

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This work analyses a very specific source on the Crimean history at the turn of the eighteenth and nineteenth centuries: British traveller Edward Daniel Clarke’s account of his journey to the south-western extremity of the Peninsula to study archaeological sites dating to different historical periods. This episode was described in a chapter of Clarke’s “Travels,” which became extraordinary popular and to a great extent shaped the notion of the Crimea in the public mind of the West. Clarke contributed much to the development of some stereotypes of the Crimea and Russia that continued to these d

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Itoh, Nobuyuki, and Hiroya Ohta. "Secreted bone morphogenetic protein antagonists of the Chordin family." BioMolecular Concepts 1, no. 3-4 (2010): 297–304. http://dx.doi.org/10.1515/bmc.2010.026.

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AbstractChordin, Chordin-like 1, and Chordin-like 2 are secreted bone morphogenetic protein (BMP) antagonists with highly conserved Chordin-like cysteine-rich domains. Recently, Brorin and Brorin-like have been identified as new Chordin-like BMP antagonists. A Chordin ortholog, Short gastrulation, has been identified in Drosophila, a protostome, but not other orthologs. By contrast, Chordin, Chordin-like 1, and Chordin-like 2 have been identified in Ciona intestinalis, the closest living relatives of the vertebrates, but Brorin and Brorin-like have not. However, all these genes have been ident

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Marseglia, Rocco. "Le chœur entre spectacle et spectateurs." Hermes 151, no. 3 (2023): 267–85. http://dx.doi.org/10.25162/hermes-2023-0023.

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Papanikolaou, A. M., L. H. Margaritis, and S. J. Hamodrakas. "Ultrastructural analysis of chorion formation in the silkmoth Bombyx mori." Canadian Journal of Zoology 64, no. 5 (1986): 1158–73. http://dx.doi.org/10.1139/z86-175.

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The formation of the chorion in the silkmoth Bombyx mori (Lepidoptera) is analysed in detail by means of electron microscopy. The secretion of the proteinaceous chorion layers is being accomplished by the follicular epithelial cells which surround the oocyte. The mature chorion exhibits a tripartite ultrastructure; the trabecular layer closest to the oocyte, the inner lamellar layer, and the outer osmiophilic layer. The trabecular layer is deposited first upon the vitelline membrane and further modified possibly by rearrangement and (or) changes of its constituent proteins. A thin porous (siev

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Troilo, Helen, Anne L. Barrett, Alexander P. Wohl, et al. "The role of chordin fragments generated by partial tolloid cleavage in regulating BMP activity." Biochemical Society Transactions 43, no. 5 (2015): 795–800. http://dx.doi.org/10.1042/bst20150071.

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Chordin-mediated regulation of bone morphogenetic protein (BMP) family growth factors is essential in early embryogenesis and adult homoeostasis. Chordin binds to BMPs through cysteine-rich von Willebrand factor type C (vWC) homology domains and blocks them from interacting with their cell surface receptors. These domains also self-associate and enable chordin to target related proteins to fine-tune BMP regulation. The chordin–BMP inhibitory complex is strengthened by the secreted glycoprotein twisted gastrulation (Tsg); however, inhibition is relieved by cleavage of chordin at two specific si

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Urata, Yuka, Masayuki Nakamura, Natsuki Sasaki, et al. "Novel pathogenic XK mutations in McLeod syndrome and interaction between XK protein and chorein." Neurology Genetics 5, no. 3 (2019): e328. http://dx.doi.org/10.1212/nxg.0000000000000328.

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ObjectiveTo identify XK pathologic mutations in 6 patients with suspected McLeod syndrome (MLS) and a possible interaction between the chorea-acanthocytosis (ChAc)- and MLS-responsible proteins: chorein and XK protein.MethodsErythrocyte membrane proteins from patients with suspected MLS and patients with ChAc, ChAc mutant carriers, and normal controls were analyzed by XK and chorein immunoblotting. We performed mutation analysis and XK immunoblotting to molecularly diagnose the patients with suspected MLS. Lysates of cultured cells were co-immunoprecipitated with anti-XK and anti-chorein antib

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Samchyshyna, L., and B. Santer. "Chorion Structure of Diapause and Subitaneous Eggs of Four Diaptomid Copepods (Calanoida, Diaptomidae): SEM Observations." Vestnik Zoologii 44, no. 3 (2010): e-26-e-32. http://dx.doi.org/10.2478/v10058-010-0015-9.

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Chorion Structure of Diapause and Subitaneous Eggs of Four Diaptomid Copepods (Calanoida, Diaptomidae): SEM ObservationsScanning electron microscopic examination of diapause eggs of freshwater CalanoidaHemidiaptomus amblyodonMarenzeller,Eudiaptomus vulgaris(Schmeil),E. graciloides(Lilljeborg) and subitaneous one s ofE. gracilis(Sars) is described. The chorion surface ornamentation and number of coated layers are revealed. Diapause eggs have a thick (0.6-4.8 μ), at least two-layered chorion with patterned surface, whereas subitaneous eggs have a thin (0.13-0.25 μ), single-layered chorion with s

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Alkahtani, Saad, Abdullah A. Alkahtane, Christos Stournaras, and Saud Alarifi. "Chorein sensitive microtubule organization in tumor cells." PeerJ 11 (September 20, 2023): e16074. http://dx.doi.org/10.7717/peerj.16074.

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Background The purpose of this study is to analyzed the involvement of chorein in microtubules organization of three types of malignant; rhabdomyosarcoma tumor cells (ZF), rhabdomyosarcoma cells (RH30), and rhabdomyosarcoma cells (RD). ZF are expressing high chorein levels. Previous studies revealed that chorein protein silencing in ZF tumor cells persuaded apoptotic response followed by cell death. In addition, in numerous malignant and non-malignant cells this protein regulates actin cytoskeleton structure and cellular signaling. However, the function of chorein protein in microtubular organ

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Wang, Chuandong, Fei Xiao, Yaokai Gan, et al. "Improving Bone Regeneration Using Chordin siRNA Delivered by pH-Responsive and Non-Toxic Polyspermine Imidazole-4,5-Imine." Cellular Physiology and Biochemistry 46, no. 1 (2018): 133–47. http://dx.doi.org/10.1159/000488416.

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Background/Aims: Bone nonunion remains a challenge for orthopaedists. The technological advancements that have been made in precisely silencing target genes have provided promising methods to address this challenge. Methods: We detected the expression levels of the bone morphogenetic protein (BMP) inhibitors Chordin, Gremlin and Noggin using realtime PCR in bone mesenchymal stem cells (BMSCs) isolated from patients with normal fracture healing and those with bone nonunion. Moreover, we detected the expression of Chordin, Gremlin and Noggin during the osteogenic differentiation of human BMSCs (

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Streit, A., K. J. Lee, I. Woo, C. Roberts, T. M. Jessell, and C. D. Stern. "Chordin regulates primitive streak development and the stability of induced neural cells, but is not sufficient for neural induction in the chick embryo." Development 125, no. 3 (1998): 507–19. http://dx.doi.org/10.1242/dev.125.3.507.

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We have investigated the role of Bone Morphogenetic Protein 4 (BMP-4) and a BMP antagonist, chordin, in primitive streak formation and neural induction in amniote embryos. We show that both BMP-4 and chordin are expressed before primitive streak formation, and that BMP-4 expression is downregulated as the streak starts to form. When BMP-4 is misexpressed in the posterior area pellucida, primitive streak formation is inhibited. Misexpression of BMP-4 also arrests further development of Hensen's node and axial structures. In contrast, misexpression of chordin in the anterior area pellucida gener

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Flores-Genger, Heidrun, and P. Husslein. "Chorion-Biopsie." Gynäkologisch-geburtshilfliche Rundschau 29, no. 2 (1989): 280–81. http://dx.doi.org/10.1159/000271080.

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Valdebenito, Iván, Elías Figueroa, Matías Valdebenito, and Luis Paiva. "Chorion Alterations in Eyed-Stage Salmonid Eggs Farmed in La Araucanía, Chile: A Retrospective Study." Animals 11, no. 8 (2021): 2427. http://dx.doi.org/10.3390/ani11082427.

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The chorion is the primary envelop that protects the fish embryo against mechanical actions, pathogens, and abrupt changes in physical and chemicals conditions of the incubation medium. During embryo development, chorion alterations are not rare, but the occurrence of these is scarcely reported. Increased frequency of chorion alterations can result in increased embryo mortality and thus decreased reproductive performance and losses for fish farms. In this study, we characterize different chorion alterations observed in samples collected over 14 years from 12 salmon and trout farms located in t

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Fu, Bo, Di Wu, Shigeki Yasumasu, Masaya Hane, Chihiro Sato, and Ken Kitajima. "Critical Role of the Cortical Alveolus Protease Alveolin in Chorion Hardening In Vivo at Medaka Fertilization." Biomolecules 13, no. 1 (2023): 146. http://dx.doi.org/10.3390/biom13010146.

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Alveolin is a cortical alveolus proteinase that is secreted in the perivitelline space (PVS) at fertilization to act on the chorion. Purified alveolin is known to induce chorion hardening in vitro by processing zona pellucida B (ZPB), a major chorion component. However, in vivo function of alveolin remains unclear; thus, in this study, the effects of alveolin efficiency (Alv−/−) at the organism level were investigated using the medaka, Oryzias latipes. The Alv−/− fertilized eggs were mechanically fragile; however, they developed normally and left offspring as long as they were carefully handle

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Larraín, Juan, Michael Oelgeschläger, Nan I. Ketpura, Bruno Reversade, Lise Zakin, and E. M. De Robertis. "Proteolytic cleavage of Chordin as a switch for the dual activities of Twisted gastrulation in BMP signaling." Development 128, no. 22 (2001): 4439–47. http://dx.doi.org/10.1242/dev.128.22.4439.

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Dorsoventral patterning is regulated by a system of interacting secreted proteins involving BMP, Chordin, Xolloid and Twisted gastrulation (Tsg). We have analyzed the molecular mechanism by which Tsg regulates BMP signaling. Overexpression of Tsg mRNA in Xenopus embryos has ventralizing effects similar to Xolloid, a metalloprotease that cleaves Chordin. In embryos dorsalized by LiCl treatment, microinjection of Xolloid or Tsg mRNA restores the formation of trunk-tail structures, indicating an increase in BMP signaling. Microinjection of Tsg mRNA leads to the degradation of endogenous Chordin f

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Peterson, R. H., and D. J. Martin-Robichaud. "Permeability of the Isolated Atlantic Salmon (Salmo salar) Chorion to Ions as Estimated by Diffusion Potentials." Canadian Journal of Fisheries and Aquatic Sciences 44, no. 9 (1987): 1635–39. http://dx.doi.org/10.1139/f87-198.

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The properties of the teleost chorion and perivitelline fluid may allow the embryo to develop in an ionic medium which differs from ambient. A knowledge of these properties facilitates assessment of the potential impact of environmental perturbations (e.g. low-pH episodes) on the developing embryo. Diffusion potentials are created when differing concentrations of a salt solution are imposed upon the opposite sides of isolated Atlantic salmon (Salmo salar) chorions. These diffusion potentials are related to the mobilities of the cations and anions. The magnitude of the diffusion potentials were

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Yu, Willi, Sabina Honisch, Sebastian Schmidt, et al. "Chorein Sensitive Orai1 Expression and Store Operated Ca2+ Entry in Rhabdomyosarcoma Cells." Cellular Physiology and Biochemistry 40, no. 5 (2016): 1141–52. http://dx.doi.org/10.1159/000453168.

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Background: Chorein, a protein encoded by VPS13A (vacuolar protein sorting-associated protein 13A), is defective in chorea acanthocytosis, a rare disease characterized by acanthocytosis of red blood cells and neuronal cell death with progressive hyperkinetic movement disorder, cognitive dysfunction, behavioral abnormalities and chronic hyperkalemia. Chorein is highly expressed in ZF rhabdomyosarcoma cells and counteracts apoptosis of those cells. Chorein is effective in part by interacting with and fostering stimulation of phosphoinositide-3-kinase (PI3K)-p85-subunit. PI3K dependent signaling

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Arai, Kaoru, Yoshiaki Nishizawa, Omi Nagata, et al. "The Role of Chorein Deficiency in Late Spermatogenesis." Biomedicines 12, no. 1 (2024): 240. http://dx.doi.org/10.3390/biomedicines12010240.

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VPS13A, also known as chorein, whose loss of function causes chorea-acanthocytosis (ChAc), is characterized by Huntington’s-disease-like neurodegeneration and neuropsychiatric symptoms in addition to acanthocytosis in red blood cells. We previously reported that ChAc-model mice with a loss of chorein function exhibited male infertility, with asthenozoospermia and mitochondrial dysmorphology in the spermatozoa. Here, we report a novel aspect of chorein dysfunction in male fertility, particularly its role in spermatogenesis and mitochondrial integrity. An increase in anti-malondialdehyde antibod

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Regan, Jennifer. "Chorus." Hudson Review 39, no. 3 (1986): 454. http://dx.doi.org/10.2307/3856762.

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Worth, Zara. "Chorus." Journal of Writing in Creative Practice 13, no. 1 (2020): 101–10. http://dx.doi.org/10.1386/jwcp.13.1.101_3.

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Chorus re-writes Albert Hay Malotte’s choral rendering of ‘The Lord’s Prayer’ using hashtagged words appropriated from existing Instagram posts connected to the ‘clean eating’ food and lifestyle trend. The dyad of contemporary food culture and the musical score for one of the most well-known prayers in Christianity signals the collectivity and influence that the hashtagging of specific words and phrases can carry in certain online contexts. All the hashtags used in Chorus also featured in Worth’s previous year-long Instagram based performance-drawing titled A Drawing Made by Cutting Up My Body

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Whitcomb, Katharine. "Chorus." Missouri Review 23, no. 2 (2000): 119–20. http://dx.doi.org/10.1353/mis.2000.0108.

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Larrain, J., D. Bachiller, B. Lu, E. Agius, S. Piccolo, and E. M. De Robertis. "BMP-binding modules in chordin: a model for signalling regulation in the extracellular space." Development 127, no. 4 (2000): 821–30. http://dx.doi.org/10.1242/dev.127.4.821.

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A number of genetic and molecular studies have implicated Chordin in the regulation of dorsoventral patterning during gastrulation. Chordin, a BMP antagonist of 120 kDa, contains four small (about 70 amino acids each) cysteine-rich domains (CRs) of unknown function. In this study, we show that the Chordin CRs define a novel protein module for the binding and regulation of BMPs. The biological activity of Chordin resides in the CRs, especially in CR1 and CR3, which have dorsalizing activity in Xenopus embryo assays and bind BMP4 with dissociation constants in the nanomolar range. The activity o

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Santos-Ortega, Yulica, and Nabil Killiny. "The Chorion Proteome of Diaphorina citri, the Vector of Huanglongbing Disease in Citrus." Insects 12, no. 11 (2021): 959. http://dx.doi.org/10.3390/insects12110959.

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Nowadays, the Asian citrus psyllid, Diaphorina citri (Kuwayama) (Hemiptera: Liviidae) is considered the most devastating pest of citrus because it transmits “Candidatus Liberibacter asiaticus”, the putative causal agent of huanglongbing (HLB) or citrus greening. Controlling the vector is the main strategy used to mitigate HLB. Targeting D. citri at the very early stages of its development may offer an effective control strategy. Identifying chorion proteins will contribute to a better understanding of embryo development and egg hatching and thus could lead to valuable targets to better control

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Race, Jonathan P., Grant C. Townsend, and Toby E. Hughes. "Chorion Type, Birthweight Discordance and Tooth-Size Variability in Australian Monozygotic Twins." Twin Research and Human Genetics 9, no. 2 (2006): 285–91. http://dx.doi.org/10.1375/twin.9.2.285.

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AbstractChorion type is an important variable that can affect the prenatal environment of monozygotic (MZ) twin pairs, leading to differences in growth and development. In particular, vascular anastomoses between monochorionic (MC) MZ twin pairs can lead to an imbalance in nutrition between co-twins. One objective of this study was to determine whether maternal reports, hospital records or birthweight discordances found in MZ co-twins provide reliable indications of monochorionicity. The other objective was to test the hypotheses that in MZ twin pairs of known chorion type, MC twin pairs would

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Harmon, Katrina A., MaryRose Kammer, Justin T. Avery, Kelly A. Kimmerling, and Katie C. Mowry. "Retention of Key Characteristics of Unprocessed Chorion Tissue Resulting in a Robust Scaffold to Support Wound Healing." International Journal of Molecular Sciences 24, no. 21 (2023): 15786. http://dx.doi.org/10.3390/ijms242115786.

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Placental membranes have been widely studied and used clinically for wound care applications, but there is limited published information on the benefits of using the chorion membrane. The chorion membrane represents a promising source of placental-derived tissue to support wound healing, with its native composition of extracellular matrix (ECM) proteins and key regulatory proteins. This study examined the impact of hypothermic storage on the structure of chorion membrane, ECM content, and response to degradation in vitro. Hypothermically stored chorion membrane (HSCM) was further characterized

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Gao, Lu, Ping He, Jinyan Sha, et al. "Corticotropin-Releasing Hormone Receptor Type 1 and Type 2 Mediate Differential Effects on 15-Hydroxy Prostaglandin Dehydrogenase Expression in Cultured Human Chorion Trophoblasts." Endocrinology 148, no. 8 (2007): 3645–54. http://dx.doi.org/10.1210/en.2006-1212.

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Throughout gestation, the chorion laeve controls the levels of biologically active prostaglandins (PGs) by its high level of nicotinamide adenine dinucleotide-dependent 15-hydroxy PG dehydrogenase (PGDH). In this study, we investigate the effects mediated by CRH receptors on the expression of PGDH in the chorion. We found that both CRHR1 and CRHR2 were localized in cultured chorion trophoblast cells, with CRH-R1α, R1β, R1c, R1e, and R1f and CRHR2β isoforms identified in these cells. To block the actions of endogenous CRH and its related peptides, cultured chorion trophoblasts were treated with

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Santolík, O. "New results of investigations of whistler-mode chorus emissions." Nonlinear Processes in Geophysics 15, no. 4 (2008): 621–30. http://dx.doi.org/10.5194/npg-15-621-2008.

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Abstract. This review summarizes selected recent results obtained during investigation of whistler-mode chorus emissions in the Earth's magnetosphere. Special attention is paid to results published during the last five years, with a focus on the results of the CLUSTER project. The nonlinear nature of chorus emissions is demonstrated using both theoretical results and measurements. Selected areas of research on whistler-mode chorus are covered and the paper especially reports new results on substructure and amplitudes of chorus wave packets, on new observations of frequency differences of choru

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Downs, K. M., and R. L. Gardner. "An investigation into early placental ontogeny: allantoic attachment to the chorion is selective and developmentally regulated." Development 121, no. 2 (1995): 407–16. http://dx.doi.org/10.1242/dev.121.2.407.

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Culture of postimplantation conceptuses was used in conjunction with microsurgery to investigate the timing, the mechanism and the developmental regulation of chorioallantoic fusion in the mouse. The timing of fusion was determined in both freshly recovered conceptuses and in those that had been cultured from as early as the mid-streak stage. Attachment of the allantois to the chorion was found to have occurred in most conceptuses by the 6-somite stage, irrespective of whether they had been cultured. In investigating the mechanism of fusion, we wished to determine whether it depended on direct

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Heck, M. M., and A. C. Spradling. "Multiple replication origins are used during Drosophila chorion gene amplification." Journal of Cell Biology 110, no. 4 (1990): 903–14. http://dx.doi.org/10.1083/jcb.110.4.903.

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DNA from Drosophila egg chambers undergoing chorion gene amplification was analyzed using the two-dimensional gel technique of Brewer and Fangman. At stage 10, 34% of DNA molecules from the maximally amplified region of the third chromosome chorion gene cluster contained replication forks or bubbles. These nonlinear forms were intermediates in the process of amplification; they were confined to follicle cells, and were found only within the replicating region during the time of amplification. Multiple origins gave rise to these intermediates, since three separate regions of the third chromosom

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Hsu, Sheau-Yu, and Frederick William Goetz. "Inhibition of Chorion Expansion and Preservation of Fertility in Goldfish (Carassius auratus) Eggs by Protease Inhibitors." Canadian Journal of Fisheries and Aquatic Sciences 50, no. 5 (1993): 932–35. http://dx.doi.org/10.1139/f93-107.

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The in vitro effects of protease inhibitors on chorion expansion and the fertility of goldfish (Carassius auratus) eggs were investigated. Expansion of the chorion in ovulated eggs was blocked by the serine protease inhibitors benzamidine and soybean trypsin inhibitor when they were held in a goldfish Ringer solution. Eggs in which chorion expansion was inhibited retained their fertility for 30 min when held in this solution. In contrast, ovulated eggs lost their fertility in freshwater even in the presence of a protease inhibitor. The results suggest that chorion expansion and loss of fertili

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Titova, E. E., B. V. Kozelov, F. Jiriček, J. Smilauer, A. G. Demekhov, and V. Yu Trakhtengerts. "Verification of the backward wave oscillator model of VLF chorus generation using data from MAGION 5 satellite." Annales Geophysicae 21, no. 5 (2003): 1073–81. http://dx.doi.org/10.5194/angeo-21-1073-2003.

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Abstract. We present a detailed study of chorus emissions in the magnetosphere detected on board Magion 5, when the satellite was not far from the magnetic equator. We determine the frequency sweep rate of more than 8500 electromagnetic VLF chorus elements. These results are compared with the backward wave oscillator (BWO) regime of chorus generation. Comparison of the frequency sweep rate with the BWO model shows: (i) There is a correlation between the frequency sweep rates and the chorus amplitudes. The frequency sweep rate increases with chorus amplitude, in accordance with expectations fro

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Peretiatko, L. P., N. V. Fateeva, R. A. Kuznetsov, and A. I. Malyshkina. "Vascularization of chorion villi in the first trimester of gestation with physiological course and in recurrent miscarriage with underlying chronic endometritis." I.P.Pavlov Russian Medical Biological Herald 25, no. 4 (2017): 612–20. http://dx.doi.org/10.23888/pavlovj20174612-620.

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Aim. To study stages of vasculo- and angiogenesis in uncomplicated course of the first trimester of gestation and to identify disorders in vascularization of the villous chorion in recurrent miscarriages and chronic endometritis. Materials and Methods. The main group – villous chorion of 5-12 weeks of gestation obtained from female patients with recurrent miscarriage and chronic endometritis (n=35); comparison group – villous chorion obtained from clinically healthy females in official abortions (n=30). On the basis of the results of morphological examination the analysis of stages of va

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MATESCO, VIVIANA C., BRENDA B. R. J. FÜRSTENAU, JORGE L. C. BERNARDES, CRISTIANO F. SCHWERTNER, and JOCÉLIA GRAZIA. "Morphological features of the eggs of Pentatomidae (Hemiptera: Heteroptera)." Zootaxa 1984, no. 1 (2009): 1–30. http://dx.doi.org/10.11646/zootaxa.1984.1.1.

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Eggs of 14 species within two subfamilies (Edessinae and Pentatominae, tribes Carpocorini, Nezarini, Pentatomini, Procleticini, and one unplaced species) of neotropical pentatomids were studied with scanning electron microscopy, and their external morphology was characterized in detail (chorion surface, operculum, and aero-micropylar processes). Eggs of these species have similar characteristics to those already described for other pentatomids. Most of them are barrelshaped, except in Edessa meditabunda (with spherical eggs) and Odmalea basalis (whose eggs have flattened lateral faces). A “T”-

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Seburn, David C., and Kari Gunson. "Has the Western Chorus Frog (Pseudacris triseriata) Declined in Western Ottawa, Ontario?" Canadian Field-Naturalist 125, no. 3 (2011): 220. http://dx.doi.org/10.22621/cfn.v125i3.1224.

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To determine whether the Western Chorus Frog has declined in western Ottawa, we conducted auditory surveys at historical locations as well as at various other wetlands. Western Chorus Frogs were detected at 12 of 18 historical locations. Wetland habitat remained at all historical locations where the species was not detected. There was no difference in the year of historical records for sites where Western Chorus Frogs were (median 1987.5) and were not (median 1987.5) detected. In the present study, Western Chorus Frogs were also detected at 30 locations where they had not been previously repor

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Santolík, O., E. Macúšová, K. H. Yearby, N. Cornilleau-Wehrlin, and H. StC K. Alleyne. "Radial variation of whistler-mode chorus: first results from the STAFF/DWP instrument on board the Double Star TC-1 spacecraft." Annales Geophysicae 23, no. 8 (2005): 2937–42. http://dx.doi.org/10.5194/angeo-23-2937-2005.

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Abstract. We use the first measurements of the STAFF/DWP instrument on the Double Star TC-1 spacecraft to investigate whistler-mode chorus. We present initial results of a systematic study on radial variation of dawn chorus. The chorus events show an increased intensity at L parameter above 6. This is important for the possible explanation of intensifications of chorus, which were previously observed closer to the Earth at higher latitudes. Our results also indicate that the upper band of chorus at frequencies above one-half of the electron cyclotron frequency disappears for L above 8. The low

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Lilford, Richard J. "Chorion Villus Biopsy." Clinics in Obstetrics and Gynaecology 13, no. 3 (1986): 611–32. http://dx.doi.org/10.1016/s0306-3356(21)00035-2.

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Rocker, I. "Chorion Villus Sampling." Journal of Medical Genetics 25, no. 4 (1988): 287. http://dx.doi.org/10.1136/jmg.25.4.287.

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Lilford, R. J. "Chorion villus biopsy." Archives of Disease in Childhood 60, no. 10 (1985): 897–99. http://dx.doi.org/10.1136/adc.60.10.897.

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Whittle, M. J., Henry Cheng, and DavidT Y. Liu. "Chorion villus sampling." Lancet 338, no. 8760 (1991): 196. http://dx.doi.org/10.1016/0140-6736(91)90195-u.

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Procter, Susan E., Jessie L. Watt, and Elizabeth S. Gray. "Chorion in culture." Clinical Genetics 29, no. 2 (2008): 104–7. http://dx.doi.org/10.1111/j.1399-0004.1986.tb01231.x.

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Masuda, Kaori, Ichiro luchi, and Kenjiro Yamagami. "Analysis of Hardening of the Egg Envelope (Chorion) of the Fish, Oryzias latipes. (Egg envelope (chorion)/Egg activation/Chorion hardening/Fish egg/Chorion proteins)." Development, Growth and Differentiation 33, no. 1 (1991): 75–83. http://dx.doi.org/10.1111/j.1440-169x.1991.00075.x.

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luchi, Ichiro, Kaori Masuda, and Kenjiro Yamagami. "Change in Component Proteins of the Egg Envelope (Chorion) of Rainbow Trout during Hardening. (Fish Egg Envelope/Chorion/Chorion Proteins/Chorion Hardening/Egg Activation)." Development, Growth and Differentiation 33, no. 1 (1991): 85–92. http://dx.doi.org/10.1111/j.1440-169x.1991.00085.x.

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Jintsu, Yoshie, Toshiki Uchifune, and Ryuichiro Machida. "Structural features of eggs of the basal phasmatodean Timema monikensis Vickery & Sandoval, 1998 (Insecta: Phasmatodea: Timematidae)." Arthropod Systematics & Phylogeny 68, no. 1 (2010): 71–78. http://dx.doi.org/10.3897/asp.68.e31716.

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Structural features of the eggs of a basal phasmatodean, Timema monikensis Vickery & Sandoval, 1998 (Timematidae) were examined. The eggs of this species are soft and deposited coated with soil and/or other extraneous particles. The chorion, which is transparent and weakly sclerotized, is composed of an endochorion and an exochorion. The non-inclined operculum is located at the anterior pole of the egg. The chorion in the marginal region of the operculum is thinned to form an opercular collar together with the chorion of the egg body. An inverted triangular micropylar plate is on the ventr

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Jintsu, Yoshie, Toshiki Uchifune, and Ryuichiro Machida. "Structural features of eggs of the basal phasmatodean Timema monikensis Vickery & Sandoval, 1998 (Insecta: Phasmatodea: Timematidae)." Arthropod Systematics & Phylogeny 68 (February 28, 2010): 71–78. https://doi.org/10.3897/asp.68.e31716.

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Structural features of the eggs of a basal phasmatodean, Timema monikensis Vickery & Sandoval, 1998 (Timematidae) were examined. The eggs of this species are soft and deposited coated with soil and/or other extraneous particles. The chorion, which is transparent and weakly sclerotized, is composed of an endochorion and an exochorion. The non-inclined operculum is located at the anterior pole of the egg. The chorion in the marginal region of the operculum is thinned to form an opercular collar together with the chorion of the egg body. An inverted triangular micropylar plate is on the ventr

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Vlachou, Dina, Mary Konsolalti, Peter P. Tolias, Fotis C. Kafatos, and Katia Komitopoulou. "The Autosomal Chorion Locus of the Medfly Ceratitis capitata. I. Conserved Synteny, Amplification and Tissue Specificity but Sequence Divergence and Altered Temporal Regulation." Genetics 147, no. 4 (1997): 1829–42. http://dx.doi.org/10.1093/genetics/147.4.1829.

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Abstract We report the isolation, full sequence characterization, amplification and expression properties of medfly chorion genes corresponding to the autosomal chorion locus of Drosophila. These genes are found adjacent to the paramyosin gene and are organized in the same order and tandem orientation as their Drosophila homologues, although they are spaced further apart. They show substantial sequence divergence from their Drosophila homologues, including novel peptide repeats and a new spacing of the tyrosines, which are known to be cross-linked in Dipteran chorion. The genes are amplified a

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Santolik, O., E. Macusova, E. E. Titova, et al. "Frequencies of wave packets of whistler-mode chorus inside its source region: a case study." Annales Geophysicae 26, no. 6 (2008): 1665–70. http://dx.doi.org/10.5194/angeo-26-1665-2008.

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Abstract. Whistler-mode chorus is a structured wave emission observed in the Earth's magnetosphere in a frequency range from a few hundreds of Hz to several kHz. We investigate wave packets of chorus using high-resolution measurements recorded by the WBD instrument on board the four Cluster spacecraft. A night-side chorus event observed during geomagnetically disturbed conditions is analyzed. We identify lower and upper frequencies for a large number of individual chorus wave packets inside the chorus source region. We investigate how these observations are related to the central position of t

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Willink, C. W. "Notes on the Parodos-Scene in Euripides' Heraclidae, 73–117." Classical Quarterly 41, no. 2 (1991): 525–29. http://dx.doi.org/10.1017/s0009838800004675.

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In response to Iolaus' cry for help, the chorus in Held, enter at a run (βοηδροµοντεс cf. 121), and the Parodos takes a form appropriate to that. Instead of choral song-and-dance, what follows, after an exceptionally brief non-strophic ‘entry’-passage, is an amoibaion first between the Chorus-leader and Iolaus, then between the Chorus-leader and the Herald, musical only as featuring some ‘half-chanted’ sequences in the Chorus-leader's utterances.

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