| heterocytotropic | Having an affinity for cells of a different species. Origin: hetero-+ G. Kytos, cell, + trope, a turning toward (05 Mar 2000) |
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| heterocytotropic antibody | A cytotropic antibody (chiefly of the IgG class) similar in activity to homocytotropic antibody, but having an affinity for cells of a different species rather than for cells of the same or a closely related species. (05 Mar 2000) |