Biology 1202B Lecture Notes - Pentamer, Epitope, Dendritic Cell
30 Apr 2012
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Document Summary
Adaptive immunity: antigen any foreign substance (endogenous or exogenous) that can create an adaptive immune response. Endogenous normally found within the body. Exogenous normally found outside the body. Examples: bacteria, viruses and parasites: antigens are recognized by two types of lymphocytes: B lymphocytes (b cells) released into the blood and carried to capillary beds for the tissues and organs of the lymphatic system. Differentiate from stem cells in the bone marrow. T lymphocytes (t cells) released into the blood and carried to the thymus (an organ of the lymphatic system), where they differentiate. There are two types of adaptive immunity responses: antibody mediated immunity (ami) or humoral immunity, cell-mediated immunity (cmi, both have similar mechanisms, which include: Lymphocyte divides to produce a large # of clones. Activated lymphocytes differentiate into memory cells that circulate in the blood and lymph ready to initiate a rapid immune response upon seeing same antigen, thus development of immunological memory.
