IC 50 values of the two chemotherapeutic drugs were analyzed by MTT, and the expression of P170 and DNR concentration in the cells were detected by flow cytometry.

• 方法 以柔红霉素(DNR)和高三尖杉酯碱 (HHT)联合不同浓度的冬凌草甲素处理K5 6 2 /A0 2及敏感细胞系K5 6 2 /S ,以四唑盐比色法 (MTT)检测两种化疗药物的半数抑制浓度 (IC50 ) ,以流式细胞仪检测P170蛋白的表达与细胞内DNR的浓度。