title: Detection of an R factor showing temperature-sensitive transfer in Salmonella typhimurium isolated from calves.
abstract: An R factor carrying tetracycline resistance, the transfer of which was observed in mating cultures at 25 but not at 37 C, was demonstrated in strains of Salmonella typhimurium isolated from calves.
mesh_terms: D000818:Animals; D002417:Cattle; D004352:Drug Resistance, Microbial; D005111:Extrachromosomal Inheritance; D012486:Salmonella typhimurium / Q000187:drug effects*; D013696:Temperature; D013752:Tetracycline / Q000494:pharmacology
chemical_list: D013752:Tetracycline