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Effect of aging on plasma creatinine (Cr) concentration in (A) Tsukuba hypertensive mice (THM) and (B) wild-type mice (WTM) (n=10). THM: P=0.890 and wild-type mice (WTM): P=0.975. Solid line: regression line; dotted lines: 95% confidence interval (CI) of the slopes of the regression line. No significant difference was observed in the slopes between THM and WTM.
