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Induction of apoptosis by ferulic acid in Caski human cervical carcinoma cells. Ferulic acid was added to cultures of HeLa and Caski human cervical carcinoma cells at concentrations of 4, 8, 16, and 20 μM. (A) Staining with 4′,6-diamidino-2-phenylindole (DAPI) of nuclear DNA condensation of the cells is shown by flow cytometry. (B) Annexin-V staining for cell apoptosis is shown by flow cytometry. * P<0.05 and ** P<0.01 vs. DMSO-treated cells.
