Figure 3.

Effect of Borna disease virus strain infection on SH-SY5Y cellular apoptosis. (A) An annexin V/PI apoptosis detection kit was used for staining the apoptotic cells and flow cytometry was performed on days (B) 1, (C) 3 and (D) 5 post-infection. The percentages of early, later and total apoptotic cells are displayed as histograms. The data are presented as the mean ± standard deviation from three independent experiments. *P<0.05, **P<0.01 vs. control. FITC, fluorescein isothiocyanate; PI, propidium iodide; ns, not significant.