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Phagocytosis; Processing and presentation of foreign antigens to T cells; secretion of interleukin-1, which stimulates secretion of interleukin-2 by helper T cells and B cells; secretion of interferons that stimulate T cell growth.
Processes and presents antigen to T cells and B cells; found in mucous membranes, skin, lymph nodes.
Processes and presents antigen to helper T cells.
Antigen-Presenting cells (APCS) are...
- (1) Macrophages
- (2) Dendrtic cell
- (3) B cell
Kills host target cells by releasing granzymes that induce apoptosis, perforin that forms channels to cause cytolysis, granulysin that destroys microbes, lymphotoxin that destroys target cell DNA, gama-interferon that attracts marcophages and increase their phagocytic activity, and macrophage migration inhibition factor that prevents macrophage migration from site of infection.
Cyotoxic T cell
Cooperates with B cell to amplify antibody production by plasma cells and secretes interleukin-2, which stimulates proliferation of T cells and B cells. May secrete gamma-IFN and tumor necrosis factor (TNF), which stimulate inflammatory response.
Helper T cell
Remains in lymphatic tissue and recognizes original invading antigens, even years after the first encounter.
Memory T cell
Diiferentiates into antibody-producing plasma cell.
Descendant of B cell that produces and secretes antobodies.
Descendant of B cell tha tremains after an immune response and is ready to respond rapidly and forcefully should the same antigen enter the body in the furture.
Memory B cell
- (1) Cyotoxic T cell
- (2) Helper T cell
- (3) Memory T cell
- (4) B cell
- (5) Plasma cell
- (6) Memory B cell
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