Figure 6
From: Functional verification of the diphtheria toxin A gene in a recombinant system
Cell proliferation assay. The optical density at 490 nm is represented on the y-axis and the time after transfection on the x-axis. Bars labeled with the same letter did not show significant differences (p > 0.05); bars labeled with different and successive letters differed significantly (0.01 < p < 0.05); bars labeled with different letters that are not successive differed more significantly (p < 0.01).