Fig. 4.

Left panel: Histological cross-sectional photos (10 µm) stained with hematoxylin and eosin, obtained from fragments of aorta (upper), carotid (middle) and femoral (bottom) arteries from 1 rat of each group (young, adult and old). Bars represent 200µm (objective: 40x for aorta artery and 100x for carotid and femoral arteries). Right panel: Pearson correlation between vessel wall cross-sectional area (CSA, µm²) of aorta (r=0.508. p=0.0113), carotid (r=0.519, p=0.0158) and femoral (r=0.683, p=0.0002) arteries. Significance: * p<0.05