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Mutation spectra of Rif-resistant mutants. (A) Mutation spectra of glycosylase knockout strains. The level of each type of mutation detected is expressed as a percentage of all of the mutations detected in a strain. The nucleotide that was mutated is indicated on the y axis, and the result of the mutation is indicated on the x axis. (B) Mutation frequencies for mutations in the knockout strains compared to the mutation frequencies in the wild-type strain. n.d., no mutation detected.
