What to do about the new penicillins and cephalosporins.
D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D001424:Bacterial Infections / Q000188:drug therapy; D002511:Cephalosporins / Q000627:therapeutic use*; D006090:Gram-Negative Bacteria / Q000187:drug effects; D006801:Humans; D010406:Penicillins / Q000627:therapeutic use*
D000900:Anti-Bacterial Agents; D002511:Cephalosporins; D010406:Penicillins