Figure 4.
Apoptosis analysis using flow cytometry after staining with Annexin V-BV450. Histograms show the percentage of apoptotic MDA-MB-231 cells after the treatment with doxorubicin at 2.5 μM for 24 h or 48 h. Data are presented as the means ± SD of triplicate experiments. ** p < 0.01 vs. control (ns, not significant).