avidity

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avidity

 [ah-vid´ĭ-te]
1. eagerness, or a strong attraction for something.
2. in immunology, an imprecise measure of the strength of antigen-antibody binding based on the rate at which the complex is formed.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

a·vid·i·ty

(ă-vid'ĭ-tē),
The binding strength of an antibody for an antigen.
[L. avidus, greedy, eager fr. aveo, to crave]
Farlex Partner Medical Dictionary © Farlex 2012

avidity

(ə-vĭd′ĭ-tē)
n. pl. avidi·ties
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

avidity

The degree of stability of an antibody’s binding with its antigen, which is a function of the number of shared binding sites and the binding energy of the antibody and antigen, which is the sum of the binding affinities of the combining sites on the antibody.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

avidity

Immunology The degree of stability of an antibody's binding with its antigen, which is a function of the number of shared binding sites and the binding energy of an antibody and antigen–the sum of the binding affinities of the combining sites on the antibody. Cf Affinity.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

a·vid·i·ty

(ă-vid'i-tē)
A measure of the binding strength of a multivalent antibody to a multivalent antigen.
See also: affinity
[L. avidus, greedy, eager fr. aveo, to crave]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Whereas all immunoglobulin isotypes are known to be lower in CU+ than in GAA, a fact we could also confirm for specific IgG in our study, avidities could also be interpreted when analysing the time interval between parasitism and obtaining of the serum sample.
Furthermore, blocking antibodies, such as Ig[G.sub.4] included in the IgG compartment, with confirmed higher avidities in GAA could, by competing with the same epitopes recognized by IgE, prevent mast cell activation and the subsequent allergic episode, when Anisakis contaminated fish (nonviable or inactivated larvae) is well tolerated by patients with previous GAA.
The magnitude of immunoassay interference would be dependent on the assay format and the relative affinities/ avidities of interfering antibodies and their titer.