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(Science: immunology) immunity acquired by the transfer from another animal of antibody or sensitised lymphocytes. passive transfer of antibody from mother to offspring is important for immune defense during the perinatal period. An impermanent form of acquired immunity in which antibodies against a disease are acquired naturally (as through the placenta to an unborn child) or artificially (as by injection of antiserum).A situation where ready made antibodies are present to fight off an antigen. These antibodies may have derived from the mothers' placenta which transmitted antibodies to the offspring during pregnancy or via a vaccination which allowed the body to recognise the particular pathogen at hand before the real thing comes along and authentically attacks.

glossary/passive_immunity.txt · Last modified: 2012/10/16 14:40 (external edit)