| Ducrey's bacillus | <bacteria> A species of haemophilus that appears to be the pathogen or causative agent of the sexually transmitted disease, chancroid. (12 Dec 1998) |
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| Ducrey, Augusto | <person> Italian dermatologist, 1860-1940. See: Ducrey's bacillus, Ducrey test. (05 Mar 2000) |
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| Ducrey test | An intradermal test, using inactivated Haemophilus ducreyi, for diagnosis of chancroid; a positive delayed reaction is indicative of present or past infection; false-positive results occur. Synonym: Ito-Reenstierna test. (05 Mar 2000) |