title: Studies on the frequency of occurrence of R factor in Klebsiella bacilli.
mesh_terms: D000166:Acridines / Q000494:pharmacology; D000667:Ampicillin / Q000494:pharmacology; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001431:Bacteriological Techniques; D002509:Cephaloridine / Q000494:pharmacology; D002701:Chloramphenicol / Q000494:pharmacology; D007116:Immunization, Passive; D007709:Klebsiella / Q000201:enzymology / Q000276:immunology*; D009268:Nalidixic Acid / Q000494:pharmacology; D010118:Oxytetracycline / Q000494:pharmacology; D010403:Penicillin Resistance; D010405:Penicillinase / Q000096:biosynthesis / Q000378:metabolism; D012485:Salmonella typhi / Q000201:enzymology / Q000276:immunology*; D013307:Streptomycin / Q000494:pharmacology; D047090:beta-Lactams / Q000494:pharmacology
chemical_list: D000166:Acridines; D000900:Anti-Bacterial Agents; D047090:beta-Lactams; D009268:Nalidixic Acid; D002701:Chloramphenicol; D000667:Ampicillin; D010405:Penicillinase; D002509:Cephaloridine; D010118:Oxytetracycline; D013307:Streptomycin