title: A system for measuring the frequencies of tandem and non-tandem double base substitutions induced by ultraviolet irradiation.
mesh_terms: D001483:Base Sequence; D004926:Escherichia coli / Q000528:radiation effects*; D005838:Genotype; D009154:Mutation; D010727:Phosphoric Diester Hydrolases; D012346:RNA, Transfer, Amino Acyl / Q000235:genetics*; D006163:Ribonuclease T1; D013045:Species Specificity; D013489:Suppression, Genetic / Q000528:radiation effects*; D014161:Transduction, Genetic; D014466:Ultraviolet Rays
chemical_list: D012346:RNA, Transfer, Amino Acyl; D006163:Ribonuclease T1; D010727:Phosphoric Diester Hydrolases