endotoxin

[en-doh-tok-sin]
noun Biochemistry.
the toxic protoplasm liberated when a microorganism dies and disintegrates, as in Eberthella typhi, the causative agent of typhoid fever.
Compare exotoxin.


Origin:
1900–05; endo- + toxin

endotoxic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
endotoxin (ˌɛndəʊˈtɒksɪn)
 
n
a toxin contained within the protoplasm of an organism, esp a bacterium, and liberated only at death
 
endo'toxic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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American Heritage
Medical Dictionary

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 Britannica
Encyclopedia

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.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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