Body and heart weights of metoprolol treated mice.

Mean+SEM. * different from C57 B10 control, $ different from Sgcd-/- control. Number of symbols denotes level of significance e.g. *p均值±标准误（Standard Error of the Mean, SEM）。* 表示与C57BL/10对照组存在统计学差异，$ 表示与Sgcd-/-对照组存在统计学差异。符号的数量代表显著性水平，例如*p即为显著性差异的标注示例。