Figure 3.

F. tularensis strains were exposed to the ${\text{O}}_2^{-}$-generating compound paraquat in a disc diffusion assay. Each bar represents the average from three separate experiments with triplicate samples in each and error bars represent the SEM. ^*P < 0.05, ^**P < 0.01, ^***P < 0.001 vs. LVS for each concentration.