title: Branhamella catarrhalis: pathogen or opportunist?
mesh_terms: D000907:Antibodies, Bacterial / Q000032:analysis; D006801:Humans; D009343:Neisseria / Q000276:immunology / Q000302:isolation & purification / Q000472:pathogenicity*; D010033:Otitis Media / Q000382:microbiology; D012141:Respiratory Tract Infections / Q000382:microbiology; D009626:Terminology as Topic
chemical_list: D000907:Antibodies, Bacterial