| cytotropic antibody | Antibody that has an affinity for certain kinds of cells, in addition to and unrelated to its specific affinity for the antigen that induced it, because of the properties of the Fc portion of the heavy chain. See: heterocytotropic antibody, homocytotropic antibody, cytotropic antibody test. Synonym: anaphylactic antibody, cytophilic antibody. (05 Mar 2000) |
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| cytotropic antibody test | A rosette test for macrophage cytotropic antibody: monolayers of macrophages are exposed first to antibody cytotropic for macrophages, then to the antigen (for which the antibody is specific), and indicator sheep erythrocytes; if the antibody is specific for sheep erythrocytes, the latter will form a rosette around the macrophages directly, but if not, and the antigen is soluble, the antigen must be coupled to the sheep erythrocytes by an agent such as bis-diazotised benzidine. (05 Mar 2000) |
| cytotropism | <cell biology> The movement of cells or groups of cells toward or away from each other. (09 Oct 1997) |
| cytozoic | Living in a cell; denoting certain parasitic protozoa. (05 Mar 2000) |
| cytozoon | A protozoan cell or organism. Origin: cyto-+ G. Zoon, animal (05 Mar 2000) |
| cytozyme | An obsolete term for thromboplastin. Origin: cyto-+ G. Zyme, leaven (05 Mar 2000) |