| B-G | Bordet-Gengou [agar, bacillus, phenomenon] |
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| Gengou, Octave | <person> French bacteriologist, 1875-1957. See: Gengou phenomenon, Bordet-Gengou potato blood agar, Bordet-Gengou bacillus, Bordet-Gengou phenomenon, Bordet and Gengou reaction. (05 Mar 2000) |
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| Crouzon, Octave | <person> French physician, 1874-1938. See: Crouzon's disease, Crouzon's syndrome. (05 Mar 2000) |
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| Bordet and Gengou reaction | <immunology> Binding of complement as a result of its interaction with immune complexes (the classical pathway) or particular surfaces (alternative pathway). (18 Nov 1997) |
| Bordet-Gengou bacillus | <bacteria> A small, aerobic, gram-negative bacillus, causative organism of whooping cough. Produces a variety of toxins including a dermonecrotising toxin, an adenyl cyclase, an endotoxin and pertussis toxin, as well as surface components such as fimbrial haemagglutinin. (18 Nov 1997) |
| Bordet-Gengou phenomenon | The phenomenon of complement fixation; when alexin (complement)-containing serum is added to a mixture of bacteria and specific antibody, the alexin is removed (fixed) and is not available to lyse subsequently added erythrocytes sensitised with specific antibody. See: Gengou phenomenon. (05 Mar 2000) |
| Bordet-Gengou potato blood agar | Glycerine-potato agar with 25% of blood, used for the isolation of Bordetella pertussis. (05 Mar 2000) |
| Gengou phenomenon | An extension of the Bordet-Gengou phenomenon; noncellular antigens, when mixed with specific antibody, also fix alexin (complement). (05 Mar 2000) |
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