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Active immunity may be produced by
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- A. In table form, differentiate Primary from Secondary Immune Response according to the ff. a. type of Ig b. action of memory cells c. amount and speed of antibody production d. recognition phase e. timing of exposure B. In table form, differentiate Cell mediated from Antibody mediated (humoral) Immunity according to type of cells involved and product form C. Enumerate 5 lab tests/procedures done to obtain/identify Lymphocytes. Then briefly discuss one.arrow_forwardAn infected epithelial cell may present theantigen on itsa. MHC class I molecules.b. MHC class II molecules.c. Membrane bound antibodies. d. None of the above. Antibiotics are effective in treatinga. viral infections.b. bacterial infections.c. both viral and bacterial infections.d. neither viral nor bacterial infections.arrow_forwardHuman leukocyte antigens (HLAs) are involved ina. cell-mediated immunity. d. complement.b. antibody-mediated immunity. e. All of these are correct.c. the infl ammatory response.arrow_forward
- Inflammatory cytokines a. act as opsonins. Ob. are produced only by phagocytic cells. C. facilitate the migration of neutrophils from the blood to infected tissues. d. are not stimulated by Toll-like receptors. e. directly mediate the dissociation of IkB from NFkB.arrow_forwardWhich of these is an example of innate immunity?a. Tears and saliva wash away microorganisms.b. Basophils release histamine and leukotrienes.c. Neutrophils phagocytize a microorganism.d. The complement cascade is activated.e. All of these are correctarrow_forwardExplain why each choice (a-d) is correct or incorrect. A vaccine is effective because a. The vaccine contains the antibodies necessary to fight infection. b. The vaccine contains the lymphocytes necessary to fight infection. c. The secondary response of the adaptive immunity is faster and more efficient than the primary response. d. B lymphocytes are unable to mount an immune response the first time they are exposed to a new pathogen.arrow_forward
- Indicate whether the following questions are true (T) or false (F). a. Secondary immune responses take the same amount of time as primary immune responses to become effective. b. On secondary exposure to an infectious agent there is reduced mortality. c. Only immune responses made in mucosal secondary lymphoid tissues can provide protective immunity. d. If an individual acquires a second cold in the same season it will most probably be caused by a different type of cold virus. e. Plasma cells generated in a secondary immune response have longer life-spans than those made during a primary immune response. f. During a primary immune response, only memory B cells are generated.arrow_forwardAn essential property of the immune system is self-regulation. An immune response that is not adequate can lead to immunodeficiency, whereas an immune response that is excessive can lead to conditions from allergic responses to autoimmune diseases. Which of these is not an example of a breakdown of the self-regulation of the immune system?a. Multiple sclerosisb. Huntington diseasec. Systemic lupusd. Fibromylagiaarrow_forwardWhich of the following is not an autoimmune disease?a. multiple sclerosisb. myasthenia gravisc. contact dermatitisd. systemic lupus erythematosuse. rheumatoid arthritisarrow_forward
- All of the following are functions of antibodies except a. neutralization of pathogen. b. destruction of antigen. c. agglutination of antigen. d. opsonization.arrow_forwardThe human immunodeficiency virus has a preference forinfectinga. B lymphocytes.b. cytotoxic T lymphocytes.c. helper T lymphocytes.d. All of these are correct.arrow_forwardImmune responses tailored to specific antigens involvea. T cells.b. macrophages.c. monocytes.d. neutrophils.arrow_forward
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