Fig. 4. Apoptosis and proliferation analysis. (A) Cell apoptosis was measured by FACS analysis using annexin V and PI staining. Percentage of apoptotic cell was calculated as ratio of apoptotic cells to total cell numbers. (B) Cell proliferation was quantitatively evaluated by CCK-8 assay. Data were presented as means ± S.D (n = 3), **p < 0.01.
