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EXOTOXIN

 - 5 dictionary results

ex⋅o⋅tox⋅in

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

Origin:
1915–20; exo- + toxin

Related forms:
ex⋅o⋅tox⋅ic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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ex·o·tox·in   (ěk'sō-tŏk'sĭn)   
n.  A poisonous substance secreted by a microorganism and released into the medium in which it grows.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: exo·tox·in
Pronunciation: "ek-sO-'täk-s&n
Function: noun
: a soluble poisonous substance produced during growth of amicroorganism and released into the surrounding medium exotoxin> —compare ENDOTOXIN —exo·tox·ic /-'täk-sik/ adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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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

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.

Learn more about exotoxin with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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