title: Incidence of river water of Escherichia coli containing R factors.
mesh_terms: D000667:Ampicillin; D000900:Anti-Bacterial Agents; D002701:Chloramphenicol; D004739:England; D004926:Escherichia coli / Q000302:isolation & purification*; D005111:Extrachromosomal Inheritance; D005243:Feces / Q000382:microbiology; D005827:Genetics, Microbial; D006801:Humans; D009268:Nalidixic Acid; D009355:Neomycin; D010403:Penicillin Resistance; D010597:Pharmacogenetics; D012485:Salmonella typhi; D012722:Sewage; D013307:Streptomycin; D013752:Tetracycline; D014435:Typhoid Fever / Q000188:drug therapy; D014871:Water Microbiology
chemical_list: D000900:Anti-Bacterial Agents; D012722:Sewage; D009268:Nalidixic Acid; D002701:Chloramphenicol; D000667:Ampicillin; D013752:Tetracycline; D009355:Neomycin; D013307:Streptomycin