Fig. 4

Viability of the wild-type (CV1000), Mfd-deficient (CV1001), MutY-deficient (CV1002), and double mutant (CV1003) cells over the nine-day SPM presented in Fig. 3. Procedure of how viability was measured is described in materials and methods. Each point represents an average of five samples. This is a representative figure for all four conditions (induced, uninduced, treated with t-BHP, and untreated with t-BHP)