title: [Drug-resistant Escherichia coli isolated from ruminants and R factor].
mesh_terms: D000818:Animals; D002417:Cattle; D002701:Chloramphenicol / Q000494:pharmacology; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects* / Q000302:isolation & purification; D005260:Female; D005827:Genetics, Microbial; D006041:Goats; D008297:Male; D012756:Sheep; D013307:Streptomycin / Q000494:pharmacology; D013449:Sulfonamides / Q000494:pharmacology; D013752:Tetracycline / Q000494:pharmacology
chemical_list: D013449:Sulfonamides; D002701:Chloramphenicol; D013752:Tetracycline; D013307:Streptomycin