title: Common beta-lactamase-specifying plasmid in Haemophilus ducreyi and Neisseria gonorrhoeae.
abstract: Eighty-nine strains of Haemophilus ducreyi from a chancroid epidemic in Orange County, California, were examined for plasmid content. Seventy-eight (88%) of these isolates were found to contain a plasmid of 3.2 megadaltons which conferred beta-lactamase production. Restriction endonuclease digests indicated that this was the same plasmid that was found in some strains of beta-lactamase-producing Neisseria gonorrhoeae.
mesh_terms: D004269:DNA, Bacterial / Q000302:isolation & purification; D006191:Haemophilus ducreyi / Q000187:drug effects / Q000201:enzymology / Q000235:genetics*; D009344:Neisseria gonorrhoeae / Q000187:drug effects / Q000201:enzymology / Q000235:genetics*; D011815:R Factors; D001618:beta-Lactamases / Q000235:genetics*
chemical_list: D004269:DNA, Bacterial; D001618:beta-Lactamases