Methods The effects of dopamine (DA) and glutathione (GSH) on apoptotic PC12 cell were examined by fluorescence microscopy using the DNA end- labeling method.

• 方法用脱氧核糖核酸（DNA）标记法，借助荧光显微镜观察多巴胺（DA）和还原型谷胱甘肽（GSH）对PC12细胞凋亡的影响。