Fifty years of chemotherapy.
D001424:Bacterial Infections / Q000188:drug therapy; D004358:Drug Therapy / Q000266:history*; D049673:History, 20th Century; D010406:Penicillins / Q000627:therapeutic use; D013424:Sulfanilamides / Q000627:therapeutic use
D010406:Penicillins; D013424:Sulfanilamides