Penicillin-insensitive meningococci in the UK.
D006801:Humans; D008585:Meningitis, Meningococcal / Q000453:epidemiology; D009345:Neisseria meningitidis / Q000187:drug effects*; D010400:Penicillin G / Q000494:pharmacology*; D010403:Penicillin Resistance; D006113:United Kingdom
D010400:Penicillin G