(A, B) Cell apoptosis in BMSCs exposed to H2O2, EGB and EGB CS (×200). BMSCs were exposed to either H2O2, EGB, EGB CS, both H2O2 and EGB or both H2O2 and EGB CS. Hoechst 33258 staining assay was used to detect the cell apoptosis in BMSCs. a) p<0.05, significantly different from control; b) p<0.05, significantly different from EGB; c) p<0.05, significantly different from EGB CS; d) p<0.05, significantly different from H2O2. one-way ANOVA.