Four weeks l ater,the expression of bcl xL protein in infarcted area of cardiac myocytes de tected by immunohistochemistry showed that only a few cardiac myocytes in contro l group were stained,and most cardiac myocytes were dark brown in study group.

• 4周后取心脏梗死区标本免疫组化检测bcl-xL蛋白表达,发现对照组心肌只有少数着色,而实验组的心肌组织大多数呈深棕色。