Incidence of arterial medial calcification in CKD. Progression of calcification normalized to dry weight of aortic arch (A) at baseline (n = 8), week 4 (n = 7), week 8 (n = 10), and week 12 (n = 9), and of abdominal aorta (B) at baseline (n = 8), week 4 (n = 9), week 8 (n = 10), and week 12 (n = 8). Data are reported as means ± SEM. *P < 0.05, compared with baseline.