Figure 5. TP supplementation increases mitochondrial membrane potential in the SN and HIPP of aged male rats. MMP was detected by flow cytometry after labeling SN and HIPP cells with Rh123. (A) MMP analysis in dissociated SN cells. (B) MMP analysis in dissociated HIPP cells. Data are expressed as the mean ± S.D. (n = 8/group). *P < 0.05, **P < 0.01 (Bonferroni test).