[Progress of chemotherapy in various fields--internal medicine (respiratory tract infections)].
D001419:Bacteria / Q000302:isolation & purification; D002511:Cephalosporins / Q000627:therapeutic use*; D006801:Humans; D010406:Penicillins / Q000627:therapeutic use*; D012141:Respiratory Tract Infections / Q000188:drug therapy* / Q000382:microbiology
D002511:Cephalosporins; D010406:Penicillins