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Meaning of exotoxin

ex•o•tox•in

Pronunciation: (ek"sō-tok'sin), [key]
— n. Biochem.
  1. a soluble toxin excreted by a microorganism. Cf. endotoxin.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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