Fig. 5

Percent cell survival, displayed in log scale, of the wild-type (YB955), Mfd-deficient (YB9801), MutY-deficient (PERM1029), and the Mfd complemented (PERM1134) strains following exposure to the oxidizing agent diamide. Percent survival for each strain was determined by dividing the number of colonies from of the test concentration by the number of colonies observed at the no treatment control. Means are shown for each strain. The error bars represent standard error. Means were compared using the SPSS software package and one-way ANOVA. To establish whether two means were significantly different, we used the least significant differnce (LSD) test (P < 0.05) between SPSS package. Lower case letters were used to denote significant differences between means. “a”, “b”, and “c” are significantly different mean groups. These experiments were replicated four times, and each replicate experiment comprise of three repetitions. The total number of observations is 12