title: Effects of an R factor and caffeine on ultraviolet mutability in Salmonella typhimurium.
mesh_terms: D002110:Caffeine / Q000494:pharmacology*; D004352:Drug Resistance, Microbial; D009154:Mutation / Q000187:drug effects*; D011831:Radiation Genetics; D011837:Radiation-Protective Agents; D012486:Salmonella typhimurium / Q000187:drug effects* / Q000528:radiation effects; D014466:Ultraviolet Rays
chemical_list: D011837:Radiation-Protective Agents; D002110:Caffeine