Quercetin–resveratrol supplementation induces apoptosis in prostate tumors. (a) Immunoblot analysis of PCNA protein. GAPDH was used as a loading control. (b) Immunoblot analyses of full length and cleaved caspases-8 and -9 proteins in TRAMP tumor tissues. β-actin (ACTB) was used as a loading control. (c) Immunoblot analyses of BCL2 and BAX proteins. β-tubulin (TUBB) and GAPDH were used as loading controls. (d) RT-qPCR analyses of Bcl2, Bax, Nrf2, and Keap1 mRNA levels in TRAMP tumor tissues. Data are represented as mean ± SEM. A one-way ANOVA with Tukey’s multiple comparison test was performed (* p < 0.05, ** p < 0.01, *** p < 0.001).