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superantigen
(redirected from Superantigens)

   Also found in: Wikipedia 0.18 sec.
superantigen /su·per·an·ti·gen/ (-an´ti-jen) any of a group of powerful antigens occurring in various bacteria and viruses that binds outside of the normal T cell receptor site, reacting with multiple T cell receptor molecules and activating T cells nonspecifically.
superantigen
molecules that are potent T lymphocyte mitogens and simultaneously bind to class II MHC molecules. They are often associated with staphylococcal products and are involved in enterotoxemias and toxic shock syndrome in humans.


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