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endotoxin

[en-doh-tok-sin] /ˌɛn doʊˈtɒk sɪn/
noun, Biochemistry
1.
the toxic protoplasm liberated when a microorganism dies and disintegrates, as in Eberthella typhi, the causative agent of typhoid fever.
Compare exotoxin.
Origin
1900-1905
1900-05; endo- + toxin
Related forms
endotoxic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for endotoxin
  • View a video showing liquid crystal droplets before and after the addition of endotoxin.
British Dictionary definitions for endotoxin

endotoxin

/ˌɛndəʊˈtɒksɪn/
noun
1.
a toxin contained within the protoplasm of an organism, esp a bacterium, and liberated only at death
Derived Forms
endotoxic, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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endotoxin in Medicine

endotoxin en·do·tox·in (ěn'dō-tŏk'sən)
n.
A toxin that forms an integral part of the cell wall of certain bacteria and is only released upon destruction of the bacterial cell. Endotoxins are less potent and less specific than most exotoxins and do not form toxoids. Also called intracellular toxin.


en'do·tox'ic adj.
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 Article for endotoxin

toxic substance bound to the bacterial cell wall and released when the bacterium ruptures or disintegrates. Endotoxins consist of lipopolysaccharide and lipoprotein complexes. The protein component determines its foreign (antigenic) nature; the polysaccharide component determines the antibody type that can react with the endotoxin molecule to produce an immune reaction. Endotoxins are rarely fatal, although they often cause fever.

Learn more about endotoxin with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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