Lymphocytes 5.0 / 5 based on 1 rating ? BiologyHealth, illness and diseaseA2/A-levelOCR Created by: saifkhan00Created on: 16-09-18 16:12 4732156 Across 1. Divide by mitosis to form plasma cell clones. (1, 8, 5) 5. Long - lived, part of immunological memory; If they meet an antigen again, divide rapidly to form a large no. of clones of T killer cells that destroy the pathogen. (1, 6, 5) 6. CD4 receptors on CSM - bind to surface antigens on APCs; Prod. interleukins (cytokine) - stimulate activity of B cells - increases antibody production and other types of T cells - attracts + stimulates macrophages to ingest pathogens. (1, 6, 5) Down 2. Live for a very long time - provide immunological memory; Programmed to remember a specific antigen and enable the body to make a rapid response when the specific pathogen is encountered again as part of the immune response. (1, 6, 5) 3. Prod. antibodies to a particular antigen - release them into circulation. An active plasma cell lives for only a few days, but produces 2000 antibodies/second. (6, 5) 4. Suppress immune system, acting to control/regulate. Stop immune response once pathogen has been eliminated, make sure body recognises self antigens + doesn't set up an autoimmune response. (1, 9, 5) 7. Destroy antigen-carrying pathogen; Produce perforin - kills pathogen by making holes in CSM - makes it freely permeable. (1, 6, 5)
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