title: The beta-lactamase activity of the vaginal flora of asymptomatic pregnant women.
mesh_terms: D000293:Adolescent; D000328:Adult; D001419:Bacteria / Q000201:enzymology*; D005260:Female; D006801:Humans; D010403:Penicillin Resistance; D010406:Penicillins / Q000627:therapeutic use; D011247:Pregnancy; D014621:Vagina / Q000382:microbiology*; D001618:beta-Lactamases / Q000032:analysis*
chemical_list: D010406:Penicillins; D001618:beta-Lactamases