431 Immunology vocab
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| Normal serum proteins that increase rapidly as a result of infection, injury, or trauma to the tissues | Acute phase reactant
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| autoantibody
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| alloantibody
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| macromolecules that are capable of eliciting formation of immunoglobulins (antibodies) or sensitized cells in an immunocompetent host | antigen
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| the strength with which a multivalent antibody binds a multivalent antigen | avidity
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| a protein or other substance that acts as a chemical messenger to produces chemotaxis | chemotaxin
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| antigenic features of leukocytes that are identified by groups of monocolonical antibody expressing common or overlapping activity | clusters of differentiation (CD)
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| chemical messenger produced by stimulated cells cells that affects the function or activity of other cells | cytokine
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| the key portion of the immunogen against which the immune response is directed; also known as the determinant site | epitope
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| a simple chemical group that can bind to antibody once it is formed but that cannot stimulate antibody formation unless tied to a larger carrier molecules | hapten
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| a vasoactive amine released from mast cells and basophils during an allergic reaction | histamine
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| a heighten state of immune responsiveness | hypersensitivity
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| the condition of being resistant to infection | Immunity
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| any substance that is capable of inducing an immune response | Immunogen
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| the study of the reactions of a host when foreign substances are introduced into the body | immunology
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| cellular and humor mechanisms involved in the overall reaction of the body to injury or invasion by an infectious agent | inflammation
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| Cytokines produced by T cells and other cell lines that inhibit viral synthesis or act as immune regulators | interferons
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| cytokines or chemical messengers produced by leukocytes that affect the inflammatory process through an increase in soluble factors or cells | interleukins
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| a molecule that binds to a specific receptor | ligand
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| lymphokines
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| lyoszyme
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| the genes that control expression of a large group of proteins originally identified on leukocytes but now known to be found on all nucleated cells in the body. These proteins regulate the immune response and play a role in graft rejection | Major Histocompatibility complex (MHC)
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| Serum proteins that attach to foreign substance and enhance phagocytosis | Opsonins
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| the engulfment of cells or particulate matter by leukocytes, macrophages, or other cells | phagocytotis
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| a transformed B cell that actively secretes antibody | plasma cell
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| lack of visible reaction in an antigen antibody reaction caused by an excess of antigen | postzone
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| lack of visible reaction in antigen-antibody combination caused by the presence of excess antibody. This may result in false negative reaction | prozone
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| a type III hypersensitivity reaction that results from the buildup of antibodies to animal serum used in passive immunization | serum sickness
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| the change of a serological test from negative to positive as a result of developing the measurable antibodies in response to infection or immunization | seroconversion
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