[Present status and prospect of developing antibiotics against drug resistant gram negative bacilli].
D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D001424:Bacterial Infections / Q000188:drug therapy*; D004352:Drug Resistance, Microbial; D006801:Humans; D007769:Lactams / Q000627:therapeutic use
D000900:Anti-Bacterial Agents; D007769:Lactams