نتایج جستجو برای: neural cell
تعداد نتایج: 1950368 فیلتر نتایج به سال:
Trunk neural crest cells delaminate from the dorsal neural tube as an uninterrupted sheet; however, they convert into segmentally organized streams before migrating through the somitic territory. These neural crest cell streams join the segmental trajectories of pathfinding spinal motor axons, suggesting that interactions between these two cell types might be important for neural crest cell mig...
در این تحقیق شبکه عصبی مصنوعی برای پیش بینی مقادیر ضریب اطمینان و فاکتور ایمنی بحرانی سدهای خاکی ناهمگن ضمن در نظر گرفتن تاثیر نیروی اینرسی زلزله ارائه شده است. ورودی های مدل شامل ارتفاع سد و زاویه شیب بالا دست، ضریب زلزله، ارتفاع آب، پارامترهای مقاومتی هسته و پوسته و خروجی های آن شامل ضریب اطمینان می شود. مهمترین پارامتر مورد نظر در تحلیل پایداری شیب، بدست آوردن فاکتور ایمنی است. در این تحقیق ...
spinal cord injury (sci) is a devastating condition, with sudden loss of sensory, motor, and autonomic function distal to the level of trauma. the primary mechanical trauma causes necrosis, edema, hemorrhage, and vasospasm. a cascade of secondary pathophysiological mechanisms is induced, including ischemia, apoptosis, fluid and electrolyte disturbances, excitotoxicity, lipid peroxidation, produ...
objective: cd133+ umbilical cord blood cells were identified as a hematopoietic stem cell which has the capacity for extensive self-renewal and differentiation. the aim of this study was to identify the effect of staurosporine (sts), a wellknown protein kinase inhibitor on differentiation of cd133+ cells into neural cells. materials and methods: cd133+ cells were enriched by immunomagnetic bead...
The vertebrate neural crest is a population of migratory cells that originates in the dorsal aspect of the embryonic neural tube. These cells undergo an epithelial-to-mesenchymal transition (EMT), delaminate from the neural tube and migrate extensively to generate an array of differentiated cell types. Elucidating the gene regulatory networks involved in neural crest cell induction, migration a...
Early neural cell death is programmed cell death occurring within proliferating and undifferentiated neural progenitors. Little is known about the regulation and role of early neural cell death. In Xenopus embryos, primary neurogenesis is disrupted following the inhibition of early neural cell death, indicating that it is required for normal primary neurogenesis. Here we show that early neural ...
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