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Polyphyllin VII (PP7) induced apoptosis and necrosis in HepG2 cells. a HepG2 cells were treated with indicated concentrations of PP7 for 24 h and photographed using the InCell 2000 confocal microscope after Hoechst 33342 (blue), Annexin V (green) and PI (red) staining. b The number of cells displaying intact cells, apoptotic cells or dead cells was counted, * p < 0.05, ** p < 0.01, versus control (CTL). Data are represented as means ± SD from 3 independent experiments
