Fig. 4

Kaplan-Meier curves of tumor-free and overall survival. a Kaplan-Meier curves for tumor-free survival were plotted separately for non-injected and injected glands from the same animal, where appropriate. b Kaplan-Meier curves for overall survival were plotted for all experimental groups. Legend indicates which plotted curve corresponds to each experimental group and the number of animals per group (a, b). Colored asterisks indicate p value of log-rank test of matched experimental class or group compared to non-injected control animals (**< 0.01, ****< 0.0001); see Tables 1 and 2 for more details