Fig. 5. Flow cytometric measurement of live and apoptotic cells given pretreatment with 5 μM of butein, isoliquiritigenin, scopoletin, or 1 μM resveratrol and exposed to 400 μM H₂O₂ for 24 h. (A) Histograms of live and apoptotic cells stained by annexin V. (B) Bar diagrams of percentage live and total apoptotic cells. The data are shown as mean ± S.E.M. of three independent experiments (***p < 0.001 vs. control; ^###p < 0.001 vs. 400 μM H₂O₂-treated group).