Fig 1: Analysis of cell apoptosis by flow cytometry assay. At 48 h post-transfection, apoptotic cells were determined by annexin V-positive and propidium iodide-negative cells. Livin siRNA induced apoptosis of LoVo cells. (A) The apoptosis rate of cells under the indicated conditions. Data are presented as the mean from three independent triplicate experiments. (B) Representative images of flow cytometry analysis of cell apoptosis. **P<0.05 vs. control siRNA. siRNA, small interfering RNA.