SEARCH Articles Figures Tables Penicillinase Penicillin-resistant Streptococcus Penicillinase resistant penicillin Penicillinase-resistance Penicillinase-resistance Penicillinases The penicillinase-resistant penicillins are oxacillin, cloxacillin, dicloxacillin, methicillin, and nafcillin