本试验采用细胞培养方法,检测心肌宁药物对感染CB_3病毒的心肌细胞和Vero细胞的保护作用。结果表明该药可明显阻止CB_3病毒吸附细胞表面、进入细胞及产生直接的灭活作用;明显降低培养细胞的病变程度,对Vero细胞和心肌细胞具有明显的保护作用,其保护率分别为87.4％和90.2％,对感染的心肌细胞,心肌宁明显减弱病毒的毒力,其作用呈良好的量效关系。 In this experiment, the cell culture method was used to detect the protective effect of myocardinal drugs on CB_3 infected cardiomyocytes and Vero cells. The results show that the drug can significantly prevent the CB_3 virus from adsorbing on the cell surface, entering the cells, and directly inactivating; significantly reducing the degree of lesions in cultured cells, has a significant protective effect on Vero cells and cardiomyocytes, the protection rate of which is 87.4% And 90.2%, for the infective cardiomyocytes, myocardial nervation significantly attenuated the virulence of the virus, and its effect was a good dose-effect relationship.