title: The activity of carbenicillin against gram negative rods compared with that of penicillin, ampicillin and cephalosporins.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology; D002509:Cephaloridine / Q000494:pharmacology; D002511:Cephalosporins / Q000494:pharmacology*; D002512:Cephalothin / Q000494:pharmacology; D004755:Enterobacteriaceae / Q000187:drug effects*; D007709:Klebsiella / Q000187:drug effects; D008722:Methods; D008826:Microbial Sensitivity Tests; D010403:Penicillin Resistance; D010406:Penicillins / Q000494:pharmacology*; D011550:Pseudomonas aeruginosa / Q000187:drug effects
chemical_list: D002511:Cephalosporins; D010406:Penicillins; D000667:Ampicillin; D002509:Cephaloridine; D002512:Cephalothin