Fig. 4

Apoptosis and necrosis analyses of HCT116 cells exposed to different treatment regimens. Representative flow cytometry results of cells at 2 h after exposing to a no treatment, b DVDMS (5 µg/mL) alone, c ultrasound alone, and d SDT using DVDMS (5 µg/mL). e The ratio of apoptotic and necrotic cells in four groups. **p < 0.01 versus control, DVDMS, and US groups