front 1 Antigen converts these into plasma cells. | back 1 B cells
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front 2 Involved in cell-mediated immunity. | back 2 T cells
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front 3 Directed against transplanted tissue cells & cancer cells. | back 3 T cells
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front 4 Have been influenced by the thymus. | back 4 T cells
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front 5 Defend mainly against bacteria & viruses circulating in blood & lymph. | back 5 B cells
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front 6 Responsible for rejection of foreign tissue transplants. | back 6 T cells
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front 7 Based on antibodies produced as a result of recovery from a disease. | back 7 Naturally acquired active immunity
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front 8 Passed to fetus by transplacental transfer. | back 8 Naturally acquired passive immunity
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front 9 Passed to recipient by injection of gamma globulin blood fraction from other people. | back 9 Artificially acquired passive immunity
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front 10 Based on production of antibodies by vaccination. | back 10 Naturally acquired passive immunity
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front 11 An incomplete antigen that will react w/antibodies but will not, by itself, stimulate their formation. | back 11 Hapten
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front 12 The number of determinant sites on an antigen or antibody. | back 12 Valence
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front 13 The soure of B cells & T cells. | back 13 Stem cells
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front 14 Chemical messengers by which cells of immune system communicate w/each other. | back 14 Cytokines |
front 15 The relative strength of the antigen-antibody bond. | back 15 Affinity
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front 16 A pentamer; the first antibody class to appear, though comparatively short-lived. | back 16 IgM
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front 17 The most abundant immunoglobulin in serum. | back 17 IgG
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front 18 Functions of this immunoglobulin class are not well defined, but it is found on the surface of B cells. | back 18 IgD
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front 19 Involved in allergic reactions, such as hay fever. | back 19 IgE
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front 20 Often forms dimers of 2 immunoglobulin monomers. | back 20 IgA
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front 21 Synonym for antigens. | back 21 Immunogens |
front 22 B cells that interact w/self-antgens are destroyed. | back 22 Clonal deletion
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front 23 Protein bound to IgA immunoglobulins. | back 23 Secretory component |
front 24 Blood fration that contains most of the serum immunoglobulins. | back 24 Gamma globulin
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front 25 Antigenic; will stimulate the production of antitoxins. | back 25 Toxoid
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front 26 Activated B cell proliferates into a large clone of cells, some of which will differentiate into plasma cells. | back 26 Clonal selection
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front 27 CD4+ | back 27 T helper cells (TH)
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front 28 CD8+ | back 28 T cytotoxic cells (TC)
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front 29 Can differentiate into CTLs. | back 29 T cytotoxic cells
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front 30 Present T-dependent antigens to B cells. | back 30 XX unknown....help :o( |
front 31 Recognize & target cells that carry endogenous antigens. | back 31 T cytotoxic cells
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front 32 Requires assitance of a T helper cell to form antibodies. | back 32 T-dependent antigen
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front 33 Typically a protein. | back 33 T-dependent antigen
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front 34 Typically a polysaccharide such as a bacterial capsule. | back 34 T-independent antigen
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front 35 Cytokine that inhibits viral infections. | back 35 Interferon
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front 36 Released by a cytotoxic T lymphocyte to lyse a target cell. | back 36 Perforin
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front 37 Stem region of an antibody molecule. | back 37 Fc
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front 38 Programmed cell death. | back 38 Apoptosis
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front 39 First breast milk secretions of mammal. | back 39 Colostrum
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front 40 Adjective applied to a component in IgA that protects it from enzyme activity. | back 40 Plasma |
front 41 Adjective applied to the cells that actually produce antibodies after a B cell is stimulated by an antigen. | back 41 XX unknown....help :o( |
front 42 Usual configuration of IgA | back 42 Dimer |
front 43 Clumping of antigens when binding w/antibodies. | back 43 Agglutination |
front 44 Coating of target cell w/antibody that enhances phagocytosis. | back 44 Opsonization |
front 45 Coating of target cell w/antibody that leads to lysis by substances secreted by immune cells external to the target cell. | back 45 Antibody-dependent cell-mediated cytotoxicity |
front 46 Releative amont of antibody in the serum. | back 46 Antibody titer. |
front 47 Communicate between leukocytes. | back 47 Interleukins
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front 48 A factor in inflammatory diseases such as rheumatoid arthritis. | back 48 Tumor necrosis factor
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front 49 Control pathways by which stem cells develop into different red or white blood cells. | back 49 Hematopoietic cytokines
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front 50 Induce migration of leukocytes into areas of infection. | back 50 Chemokines
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front 51 Resistance present at birth that does not involve humoral or cell-mediated immunity is ____________________________ immunity. | back 51 Natural acquired passive
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front 52 A(n) ___________ site is specific chemical group on an antigen that combines with the antibody. | back 52 XX unknown....help :o( |
front 53 The five monomers that constitute the IgM molecule are held together by a ________________. | back 53 joining chain
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front 54 The antibody ________________ is the measured amount of antibody in the serum. | back 54 antiserum
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front 55 Certain lymphocytes called ________ cells kill virus-infected cells & tumor cells, but are not immunologically specific. They contact & kill the target cells. | back 55 NK (natural killer)
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front 56 B cells derive their name from an organ in poultry, the ___________. | back 56 bursa of Fabricius
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front 57 CD is short for cluster of ___________. | back 57 XX unknown....help :o( |
front 58 Low-molecular-weight substances such as penicillin that do not (by themselves) cause formation of antibodies are known immunologically as ___________. | back 58 haptens
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front 59 The second time we encounter an antigen, our immune response is faster & more intense; this is termed the ______ response. | back 59 secondary |
front 60 Some antibodies are poorer matches for an antigen than others; they are said to have less _________. | back 60 XX unknown....help :o( |
front 61 The subpopulation of T cells that mostly activate cells related to cell-mediated immunity such as macrophages, CD8+ T cells, & natural killer cell is _____________. | back 61 XX unknown....help :o( |
front 62 An antigen-presenting cell (APC)that is not efficient at phagocytosis, but is the most important in APC, is called a_________. | back 62 XX unknown....help :o( |