| Immunology. injection of lymphocytes or antibody from an immune or sensitized donor to a nonimmune host in order to impart immunity or test for allergic reactions. |

| passive transfer n. The transfer of skin-sensitizing antibodies from the blood of an allergic individual to that of a nonallergic individual in order to test the sensitized area for an allergic reaction to specific allergens. |
passive transfer n.
The transfer of skin-sensitizing antibodies from the blood of an allergic individual to that of a nonallergic individual in order to test for an allergic reaction to specific allergens.