Penicillin and meningococci.
D002701:Chloramphenicol / Q000627:therapeutic use; D002702:Chloramphenicol Resistance; D004359:Drug Therapy, Combination; D006801:Humans; D008585:Meningitis, Meningococcal / Q000188:drug therapy*; D010403:Penicillin Resistance
D002701:Chloramphenicol