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l-Lys ameliorates valvular calcification in adenine-induced uremic rats. (A) Calcified areas of aortic root tissues from group LP (a), group Ade (b), group Gly (c), and group Lys (d) are visualized by von Kossa staining. (B) Calcified area fractions (von Kossa–positive area/cross-sectional area of aortic root) are quantitatively analyzed. All results are presented as means±SD (n=6–7 in each group). *P<0.05 (Dunnett’s test). Scale bar, 500 μm.
