Medical Dictionary

superantigen

noun su·per·an·ti·gen \-ˈant-i-jən\

Medical Definition of SUPERANTIGEN

:  a substance (as an enterotoxin) that acts as an antigen capable of stimulating much larger numbers of T cells than an ordinary antigen
su·per·an·ti·gen·ic \-ˌant-i-ˈjen-ik\ adjective

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