FIG. 1.
Effect of dinB deletion on frequencies of mutants (per 108 cells) of mismatch repair-defective mutL strains. Light gray bars, dinB positive; dark gray bars, dinB deficient. The numbers above each bar indicate the average frequencies of mutants calculated for 30 independent cultures. This experiment was performed a total of four times with similar results. In no case was a significant difference for the dinB-to-dinB+ comparison found (P > 0.5). Error bars represent standard errors of the means.