title: Choice of semisynthetic beta-lactams: penicillins and cephalosporins.
mesh_terms: D000900:Anti-Bacterial Agents / Q000378:metabolism / Q000627:therapeutic use*; D002511:Cephalosporins / Q000627:therapeutic use; D006801:Humans; D007239:Infections / Q000188:drug therapy; D007700:Kinetics; D010406:Penicillins / Q000627:therapeutic use
chemical_list: D000900:Anti-Bacterial Agents; D002511:Cephalosporins; D010406:Penicillins