G. Relative NADPH/NADP+ ratio within the tumors in C(a) (n = 6, mean±SEM, Dunnett-t test). H. GSH contents within the tumors in C(a) (n = 6, mean±SEM, Dunnett-t test). Data information: * for P < 0.05; ** for P < 0.01; NS for no significance. Control referred to the corresponding plasmid vector. 