Methods MTT drug sensitivity test,growth types of CFU L in vitro,Bcl 2 antigen and Bcl 2/Bax ratio and fluoresence intensity of daunorubicin(DNR) in cell were analysed comprehensively by flow cytometry.

• 方法 MTT药物敏感试验，白血病祖细胞（CFU?L）体外生长类型，Bcl?2 抗原表达和Bcl?2/Bax 抗原比值，流式细胞仪测定细胞内柔红霉素（DNR）荧光强度四项指标被综合评价。