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agglutinin

[uh-gloot-n-in] /əˈglut n ɪn/
noun, Immunology
1.
an antibody that causes agglutination.
Origin
1895-1900
1895-1900; agglutin(ate) + -in2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for agglutinin

agglutinin

/əˈɡluːtɪnɪn/
noun
1.
a substance, such as an antibody or a lectin, that causes agglutination of cells or bacteria
Word Origin
C19: agglutinate + -in
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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agglutinin in Medicine

agglutinin ag·glu·ti·nin (ə-glōōt'n-ĭn)
n.

  1. A substance, such as an antibody, that is capable of causing agglutination of a particular antigen, especially red blood cells or bacteria.

  2. A substance, other than a specific agglutinating antibody, that causes organic particles to agglutinate.

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 agglutinin

substance that causes particles to congeal in a group or mass, particularly a typical antibody that occurs in the blood serums of immunized and normal human beings and animals. When an agglutinin is added to a uniform suspension of particles (such as bacteria, protozoa, or red cells) that contains the specific surface structure (antigen) with which the agglutinin reacts, the suspended objects adhere to each other, form clumps, fall to the bottom, and leave the suspending diluent clear. This phenomenon of agglutination is a typical antigen-antibody reaction-highly specific, reversible, and involving small reacting groups on the surface of each.

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