Research Article

Effects of Aging and Tocotrienol-Rich Fraction Supplementation on Brain Arginine Metabolism in Rats

Figure 2

The levels of (a) agmatine, (b) putrescine, (c) spermidine, and (d) spermine in the postrhinal cortex (POR), entorhinal cortex (EC), brain stem (BS), striatum (ST), and cerebellum (CE) in young and old rats. Data is presented as mean ± SEM. The asterisks indicate a significant difference between groups: , , and .
(a)
(b)
(c)
(d)