NUR 3125 Lecture Notes - Lecture 5: Thymus, Humoral Immunity, Cytotoxic T Cell
Document Summary
B lymphocytes produce antibodies that react with antigens. Cytotoxic bind to surface of invading cells, disrupt membrane and destroy. Directly react to antigen on surface of cells or infectious agents. Activation of inflammatory mediators that destroy pathogen. Substance recognized by the body as foreign . Must be processed and presented to immune cells in specific manner. Interaction between antigen-processing cells (macrophages) and t cells facilitate immune response. Can react with antibody or antigen receptors on b or t cell. Each individual t or b cell responds to only one type of antigen. Does not involve host immune system directly. Pre-formed antibodies passed from donor to recipient. Antibodies injected (hepatitis a immunoglobulin, rabies virus) Serum glycoprotein produced by mature plasma cells in response to an antigen. First antibody produced during initial response to antigen. Antigen receptor on surface of b cell. Prevent attachment and invasion of microbes through mucous membranes especially gi and respiratory.
