AGE staining correlates with patient age. Pairwise correlations between patient age in years and (A) dorsalis pedis artery (r = 0.40, p=0.0001), (B) iliac artery (r = 0.26, p=0.02), (C) mesenteric artery (r = 0.31, p=0.002), (D) renal artery (r = 0.23, p=0.03), and (E) Z-transformed average of all eight blood vessels (r = 0.26, p=0.009).