(C Statistical analysis of Ki67 activity in ADC lung sections of vehicle (Veh) and phenformin (Phen) groups. The numbers of tumors analyzed over vehicle and phenfortmin groups were 25, 22 for Ki67 Results were shown as mean ± SEM. Significance was calculated by two-tailed unpaired Student's t-test with Welch's correction. ****p<0.0001 (C) 