Figure 3. D-galactose decreased SAN and heart function in mice. (A) Electrocardiogram. (B) Echocardiogram. (C) Cerebral blood flux. (D) Heart rate in the indicated groups. (E, F) LVEF and LVFS in the indicated groups. (G) BNP assay results for the indicated groups. (H) Cerebral blood flux results for the indicated groups. * represents P<0.05; ** represents P<0.01; Control: control group; D-galactose: D-galactose administered group.