Pronunciation: bor-da' zhahn-gu'
the phenomenon of complement fixation; when complement-containing serum is added to a mixture of bacteria and specific antibody, the complement is removed (fixed) and is not available to lyse subsequently added erythrocytes sensitized with specific antibody.
Synonym(s): Bordet and Gengou reaction
See Also: Gengou phenomenon
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Examples: glitazone, GI cocktail, etc.