title: Bacteroides fragilis resistant to metronidazole.
mesh_terms: D001441:Bacteroides fragilis / Q000187:drug effects*; D004352:Drug Resistance, Microbial; D006801:Humans; D008297:Male; D008795:Metronidazole / Q000494:pharmacology*; D008875:Middle Aged
chemical_list: D008795:Metronidazole