title: Transferable resistance to antibiotics in gram-negative bacteria isolated in a hospital for infectious diseases. I. Occurrence and multiple origin of R factors.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects*; D002701:Chloramphenicol / Q000494:pharmacology; D004755:Enterobacteriaceae / Q000187:drug effects; D004917:Erythromycin / Q000494:pharmacology; D004926:Escherichia coli / Q000187:drug effects; D005827:Genetics, Microbial; D009268:Nalidixic Acid / Q000494:pharmacology; D009355:Neomycin / Q000494:pharmacology; D009582:Nitrofurantoin / Q000494:pharmacology; D010403:Penicillin Resistance; D011511:Proteus / Q000187:drug effects; D011549:Pseudomonas / Q000187:drug effects; D012486:Salmonella typhimurium / Q000187:drug effects; D013307:Streptomycin / Q000494:pharmacology; D013752:Tetracycline / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D009268:Nalidixic Acid; D004917:Erythromycin; D002701:Chloramphenicol; D000667:Ampicillin; D009582:Nitrofurantoin; D013752:Tetracycline; D009355:Neomycin; D013307:Streptomycin