Figure 3. Apoptosis of transfected mouse cardiomyocytes. Mouse cardiomyocytes were transfected with miR-122 mimic, miR-122 inhibitor or the negative control (NC), and flow cytometry was performed at 48-h post-transfection. A, Flow cytometry results after the cells were treated with fluorescein isothiocyanate (FITC) and propidium iodide (PI). The FITC-positive and PI-negative cells (in the lower right quadrant) were considered apoptotic cells. B, Percent of apoptotic cells according to the flow cytometry results. Data are reported as means±SD. **P<0.01 compared to NC group (t-test).