title: beta-Lactamase-producing Branhamella catarrhalis causing otitis media in children.
mesh_terms: D000293:Adolescent; D000667:Ampicillin / Q000494:pharmacology; D001424:Bacterial Infections / Q000209:etiology* / Q000382:microbiology; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D008826:Microbial Sensitivity Tests; D009343:Neisseria / Q000187:drug effects / Q000201:enzymology* / Q000302:isolation & purification; D010033:Otitis Media / Q000209:etiology* / Q000382:microbiology; D001618:beta-Lactamases / Q000378:metabolism*
chemical_list: D000667:Ampicillin; D001618:beta-Lactamases