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exotoxin


exo·tox·in

noun \ˌek-sō-ˈtäk-sən\

Definition of EXOTOXIN

: a soluble poisonous substance produced during growth of a microorganism and released into the surrounding medium <tetanus exotoxin>—compare endotoxin
—exo·tox·ic \-ˈtäk-sik\ adjective

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