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A substance, such as an antibody or complement protein, that binds to a bacterium or other pathogen and causes it to become more susceptible to the action of phagocytes.
[Latin opsōnāre, to buy provisions (from Greek opsōnein, from opson, condiment, delicacy; see epi in Indo-European roots) + -in.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Biochemistry) a constituent of blood serum that renders invading bacteria more susceptible to ingestion by phagocytes in the serum
[C20: from Greek opsōnion victuals]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
op•so•nin(ˈɒp sə nɪn)
any of several constituents of blood serum, as an antibody or complement, that make invading microorganisms more susceptible to destruction by phagocytes.
[1900–05; < Latin opsōn(ium) victuals]
op•son•ic (ɒpˈsɒn ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||opsonin - an antibody in blood serum that attaches to invading microorganisms and other antigens to make them more susceptible to the action of phagocytes|
blood serum, serum - an amber, watery fluid, rich in proteins, that separates out when blood coagulates
antibody - any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
n. opsonina, anticuerpo que al combinarse con un antígeno hace que éste sea más suceptible a los fagocitos.
English-Spanish Medical Dictionary © Farlex 2012