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opsonin

[op-suh-nin]
noun Immunology.
a constituent of normal or immune blood serum that makes invading bacteria more susceptible to the destructive action of the phagocytes.

Origin:
1900–05; < Latin opsōn(ium) victuals (< Greek opsōnía, derivative of opsōneîn to buy provisions) + -in2

opsonoid, adjective
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World English Dictionary
opsonin (ˈɒpsənɪn)
 
n
a constituent of blood serum that renders invading bacteria more susceptible to ingestion by phagocytes in the serum
 
[C20: from Greek opsōnion victuals]
 
opsonic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

opsonin op·so·nin (ŏp'sə-nĭn)
n.
An antibody in blood serum that causes bacteria or other foreign cells to become more susceptible to the action of phagocytes.

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