BIO 126 Lecture Notes - Lecture 12: Apoptosis, Histocompatibility, Macrophage
20 Apr 2016
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The adaptive response relies on two types of lymphocytes, or white blood cells. Adaptive immunity defends against infection of body fluids and body cells: B and t lymphocytes produce a humoral immune response and a cell- mediated immune response. In the humoral immune response, antibodies help neutralize or eliminate toxins and pathogens in the blood and lymph. Humoral response corresponds to the fluids in our body (blood and lymphatic fluid). Antibodies are released from b cells and enter the fluids. In the cell-mediated immune response specialized t cells destroy infected host cells. Antigens are substances that can elicit a response from a b or t cell. Recognition occurs when a b or t cell binds to an antigen, via an antigen receptor. The immune system produces millions of different antigen receptors but the receptors, on a single b cell or t cell are all identical to one another.
