superantigen
noun
su·per·an·ti·gen
-ˈant-i-jən 
: a substance (as an enterotoxin) that acts as an antigen capable of stimulating much larger numbers of T cells than an ordinary antigen
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“Superantigen.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/superantigen. Accessed 22 Nov. 2024.
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