title: Bacillus cereus: not a contaminant.
mesh_terms: D001409:Bacillus cereus / Q000302:isolation & purification / Q000472:pathogenicity*; D004653:Empyema / Q000382:microbiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011014:Pneumonia / Q000382:microbiology*