Effect of miR-874 transfection on cell cycle and apoptosis in SAS and FaDu cells determined by flow cytometry. (A) Typical results of cell cycle analysis of mock, miR-control and miR-874 transfectants. The bar chart represents the percentage of the cells in the G0/G1, S or G2/M phase of the cell cycle. (B) Typical results of sub-G0/G1 apoptosis analysis of mock, miR-control and miR-874 transfectants. Induction of cell apoptosis was shown after transfection of miR-874. Trials were independently conducted three times. *P<0.0167, **P<0.01.