Fig. 3

Flow cytometric analysis of apoptotic population in DS–CuO NPs- and DS–Cu-treated four cancer cell lines. a Histogram plots with b total percentage of apoptosis in the untreated and complexes-treated in MDA-MB 231, A549, Huh7 and HepG2 cells after staining with annexin/PI. Data (mean ± SEM), DS–CuO NPs was compared to other tested compounds and considered significantly different at p < < 0.05*, < 0.005**, < 0.001***