exotoxin

exotoxin

[ek-soh-tok-sin]
noun Biochemistry.
a soluble toxin excreted by a microorganism.
Compare endotoxin.


Origin:
1915–20; exo- + toxin

exotoxic, adjective
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Collins
World English Dictionary
exotoxin (ˌɛksəʊˈtɒksɪn)
 
n
a toxin produced by a microorganism and secreted into the surrounding medium
 
exo'toxic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

exotoxin ex·o·tox·in (ěk'sō-tŏk'sĭn)
n.
A toxin secreted by a microorganism and released into the environment in which it grows. Also called extracellular toxin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Britannica
Encyclopedia

exotoxin

a poisonous substance secreted by certain bacteria. In their purest form they are the most potent poisons known and are the active agents in diphtheria, tetanus, and botulism. The term is now sometimes restricted to poisonous proteins that are antigenic-i.e., that stimulate the formation of antibodies-and formed by gram-positive bacteria. Compare endotoxin.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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