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Immune System By Kevin Cantu Kevin Li Definition of Immune System Protect your body from diseases Protected by White Blood Cell Body system of organs, tissues, cells, and cell products HOW DOES IT WORK????? You can get a vaccination that protects you from diseases. An antigen is any substance that elicits an immune response, from a virus to a sliver Parts of the Immune System Fluid System of the body There are two main fluid systems in the body: blood and lymph. Innate Immunity System Immunity that occurs naturally as a result of a person's genetic constitution or physiology and does not arise from a previous infection or vaccination. Phagocytes- a cell that attracts adheres to, engulfs, and ingests foreign bodies Adaptive and Acquired Immunity System Come in two major types: B cells and T cells. B Cell----------T Cell B cells produced in the stem cells of the bone marrow; they produce antibody and oversee humoral immunity T cells non-antibody-producing lymphocytes which are also produced in the bone marrow but sensitized in the thymus and constitute the basis of cell-mediated immunity. White Blood Cell Role in fighting attacking antigens Phagocytes Ingest microbes, other cells and foreign particles Killer T-cell Kill the body’s own cells that between invaded by the viruses or bacteria. Prevents the bug from reproducing. Helper T-cell Stimulate the b cells to make antibodies, and help killer cells develop. Supressor T-cell Emerge from the wilderness bearing surface maker. B-cell React against invading bacteria or viruses by taking proteins called antibodies. How does Aids effect immune system? Aids is sexually transmitted disease. It turns off the immune system. Once the system is off, disease will easily get into your body.