Biofilm formation of oxidative stress resistance mutants.

<p>Biofilm formation was measured using crystal violet staining. The results show the means and standard deviations of a representative assay with triplicate samples. The experiment was repeated six times and all produced similar results. Statistical significance was analyzed using one-way analysis of variance (ANOVA). *<i>P</i>≤0.05, **<i>P</i>≤0.01, ****<i>P</i>≤0.0001.