title: The role of opportunistic bacteria in human disease.
mesh_terms: D000333:Aeromonas; D000421:Alcaligenes; D001407:Bacillus; D001424:Bacterial Infections / Q000209:etiology*; D002006:Brucellosis / Q000209:etiology; D004194:Disease; D004756:Enterobacteriaceae Infections / Q000209:etiology; D006801:Humans; D007165:Immunosuppression Therapy; D013290:Streptococcal Infections / Q000209:etiology