Fig. 7
Residual CFUs and survival rate of mice challenged intraperitoneally with T. pyogenes. The mice were intraperitoneally challenged at day 43 with 3.7 × 108 CFU T. pyogenes TP7 and T. pyogenes TP8 for determining liver (a, d) and PF (b, e) bacterial burdens. Survival rate was monitored for the subsequent 30 days (c, f). PBS was used as a control. *p < 0.05, **p < 0.01 and ***p < 0.001 (determined by Mantel–Cox log rank test)