hemagglutination

hemagglutination
The agglutination of red blood cells; may be immune as a result of specific antibody either for red blood cell antigens per se or other antigens which coat the red blood cells, or may be nonimmune as in h. caused by viruses or other microbes. SYN: hemoagglutination.
- passive h. a kind of passive agglutination in which erythrocytes, usually modified by mild treatment with tannic acid or other chemicals, are used to adsorb soluble antigen onto their surface, and which then agglutinate in the presence of antiserum specific for the adsorbed antigen. SYN: indirect h. test.
- reverse passive h. a diagnostic technique for virus infection using agglutination by viruses of red blood cells that previously have been coated with antibody specific to the virus.
- viral h. the nonimmune agglutination of suspended red blood cells by certain of a wide range of otherwise unrelated viruses, usually by the virion itself but in some instances by products of viral growth ( e.g., subunits), the species of erythrocyte agglutinated differing with the different viruses. SEE ALSO: h. inhibition.

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hem·ag·glu·ti·na·tion or chiefly Brit haem·ag·glu·ti·na·tion .hē-mə-.glüt-ən-'ā-shən n agglutination of red blood cells
hem·ag·glu·ti·nate or chiefly Brit haem·ag·glu·ti·nate -'glüt-ən-.āt vt, -nat·ed; -nat·ing

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he·mag·glu·ti·na·tion (he″mə-gloo″tĭ-naґshən) agglutination of erythrocytes, which may be caused by antibodies such as hemagglutinins, by viruses such as those of influenza and mumps, or by other substances such as lectins.

Medical dictionary. 2011.

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  • Hémagglutination — L’hémagglutination est une variante de la réaction d’agglutination. Elle est définie comme la fixation d’anticorps spécifiques sur des structures antigéniques présentes à la surface des globules rouges. Cette réaction aboutit à la formation d’un… …   Wikipédia en Français

  • Hemagglutination assay — The Hemagglutination Assay (HA) is a quantification of viruses by hemagglutination.Some viral families have surface or envelope proteins, that are able to agglutinate (stick to) human or animal Red blood cells (RBC) and bind to its N… …   Wikipedia

  • hemagglutination inhibition test — 1. a highly sensitive procedure for the measurement of soluble antigens in biologic specimens; the specimen is first incubated with homologous antibody and then incubated with antigen coated red blood cells; the amount of hemagglutination… …   Medical dictionary

  • hemagglutination — noun Date: 1907 agglutination of red blood cells • hemagglutinate transitive verb …   New Collegiate Dictionary

  • hemagglutination — (hem ah gloo tī na shun) The agglutination of red blood cells by antibodies …   Dictionary of microbiology

  • hemagglutination — /hee meuh glooht n ay sheuhn, hem euh /, n. the clumping of red blood cells. [1905 10; HEM + AGGLUTINATION] * * * …   Universalium

  • hemagglutination — noun The agglutination of red blood cells …   Wiktionary

  • hemagglutination — n. clumping together of red blood cells …   English contemporary dictionary

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