title: Mutation frequency decline for streptomycin-resistant mutations induced by ultraviolet light in Escherichia coli B-r.
mesh_terms: D001431:Bacteriological Techniques; D002470:Cell Survival / Q000528:radiation effects; D004352:Drug Resistance, Microbial / Q000528:radiation effects*; D004926:Escherichia coli / Q000528:radiation effects; D008722:Methods; D009154:Mutation / Q000528:radiation effects*; D011829:Radiation Dosage; D011831:Radiation Genetics; D013307:Streptomycin; D013997:Time Factors; D014364:Tryptophan; D014466:Ultraviolet Rays
chemical_list: D014364:Tryptophan; D013307:Streptomycin