Fig. 1

HVJ-E infection inhibited cell viability and induced apoptotic cell death in HeLa cells. HeLa cells were cultured with HVJ-E at the indicated MOI for 24 h. a Cell morphology was observed under a microscope. b Cell viability was measured by 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl tetrazolium bromide (MTT). c, d Cells were double-stained with Annexin V-FITC (green) and propidium iodide (PI; red) and analyzed by flow cytometry. **P < 0.01