پاورپوینت درباره Cells of the immune system

لینک دانلود و خرید پایین توضیحات دسته بندی : پاورپوینت نوع فایل : .ppt ( قابل ویرایش و آماده پرینت ) تعداد اسلاید : 30 اسلاید تعداد اسلاید انگلیسی :  10 اسلاید قسمتی از متن .ppt :         Cells of the immune system The cells of the adaptive immune system are normally present: a)Circulating cells in the blood and lymph b)Anatomically defined collection  in lymphoid organs c)Scattered cells in all tissues Cells of the immune system  (lymphocytes) Lymphocytes  are the only specific cells and are responsible for specificity and memory They are  3 subsets ,different in functions and protein products but not in morphology 1-B cells 2- T cells(helper and cytotoxic) 3- Natural killer (NK) cells B lymphocyte development stem cell Pro B cells CD19,CD10, µ heavy chain rearrangement Pre B cells Pre antigen receptor expression  immature B cells IgM BCR expression,independent of antigen and their encounter with ...