FIGURE 2.
The impact of inactivation of epf on GAS M49 adherence to (A) and internalization into (B) human epithelial cells. The data for wild type (wt) and epf-deficient mutant (epf−) represent the mean values ± standard deviation from five independent experiments. Only significant differences are indicated (U test). *, p < 0.05; ***, p < 0.001).