Sulfonamide-resistant meningococci.
D008589:Meningococcal Infections / Q000188:drug therapy; D009345:Neisseria meningitidis / Q000187:drug effects*; D010400:Penicillin G / Q000627:therapeutic use; D010403:Penicillin Resistance; D013449:Sulfonamides / Q000494:pharmacology*
D013449:Sulfonamides; D010400:Penicillin G