The concentration of intracellular ADM was detected by spectroflu orometry. With MCF 7/ADM cells treated with As 2O 3 in combination with ADM, the glutathione s transferase (GST) activity was measured by biochemical metho d.

• 以荧光分光光度计测定细胞内药物浓度的改变 ,明确As2 O3 对MCF 7/ADM的逆转作用。