Semisynthetic penicillins--chlorbutinpenicillin.
D001419:Bacteria / Q000187:drug effects*; D002626:Chemistry, Pharmaceutical; D002699:Chlorambucil / Q000494:pharmacology*; D066298:In Vitro Techniques; D010400:Penicillin G / Q000494:pharmacology; D010406:Penicillins / Q000494:pharmacology*