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Effects of DNMT1 silencing on cell cycle and apoptosis. (A): Phases of cell cycle of Hela and Siha cells were analyzed by flow cytometry assay at 48 h after transfection (**P < 0.01). (B): Apoptosis of Hela and Siha cells was analyzed by flow cytometry assay at 48 h after transfection (**P < 0.01). (1: transfection group (DNMT1-siRNA); 2: control group (negative siRNA); 3: blank group (Lipo2000), n = 3).
