نتایج جستجو برای: thymus carmanicus
تعداد نتایج: 16141 فیلتر نتایج به سال:
به منظور بررسی کمّی و کیفی اسانس گونه های مختلف آویشن (thymus) تحقیقاتی طی سال های 1390-1389 در شرایط زراعی انجام شد. این آزمایش در قالب یکی از زیر طرح های پروژه ملی استخراج و تجزیه کمّی و کیفی اسانس گونه های مختلف آویشن در برخی از استان های کشور انجام شد. بدین منظور بذرهای تعداد 74 اکسشن در گلخانه کشت شدند. سپس نشاها به مزرعه تحقیقاتی باغ گیاه شناسی ملی ایران منتقل شدند. سرشاخه های گلدار در زمان...
Postnatal T cell development depends on continuous colonization of the thymus by BM-derived T lineage progenitors. Both quantitative parameters and the mechanisms of thymus seeding remain poorly understood. Here, we determined the number of dedicated thymus-seeding progenitor niches (TSPNs) capable of supporting productive T cell development, turnover rates of niche occupancy, and feedback mech...
We compared the cytotoxic activities of thymus-dependent and thymus-independent CD8(+) T cells. Thymus-dependent CD8(+) T cells, which are foreign antigen specific, acquired cytotoxic activity to tumor cells with a basal dose of the antigen peptides and to hybridoma cells expressing anti-TCR mAb only after differentiation into effector cytotoxic T lymphocytes (CTL). In contrast, thymus-independ...
In the present work we analyze by reverse transcription, polymerase chain reaction, cDNA cloning, and sequence analysis the expression of membrane melatonin receptors in rat thymus and spleen. Results show, for the first time, that the melatonin receptor mRNA is expressed in both the thymus and spleen. Moreover, the melatonin receptor mRNA was expressed in all the lymphocyte subpopulations (CD4...
Light microscopic and ultrastructural studies of thymus in wall lizard showed remarkable season dependent structural changes. In winter, the thymus was involuted and its cortico-medullary differentiation was not distinct. Thymocytes were sparsely distributed. The epithelial cells exhibited atrophic features such as an appreciable decrease in the nuclear-cytoplasmic ratio and accordingly reducti...
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