Figure 4. Effect of aging on the expression of the ratio of (A) Rab 3d/GAPDH, (B) Syntaxin 1A/GAPDH, and (C) Vamp 2/GAPDH in LG. Tissues from both groups were excised and homogenates were analyzed by western blot (*p<0.05, Mann–Whitney U test). Results are representative of three independent experiments.