title: Penicillin therapy--newer semisynthetic penicillins.
mesh_terms: D000667:Ampicillin; D002626:Chemistry, Pharmaceutical; D003023:Cloxacillin; D004009:Dicloxacillin; D006801:Humans; D008712:Methicillin; D009254:Nafcillin; D010068:Oxacillin; D010404:Penicillin V / Q000031:analogs & derivatives*; D010406:Penicillins
chemical_list: D010406:Penicillins; D009254:Nafcillin; D000667:Ampicillin; D004009:Dicloxacillin; D003023:Cloxacillin; D008712:Methicillin; D010068:Oxacillin; D010404:Penicillin V