Ataxia telangiectasia-mutated-Rad3-related DNA damage checkpoint signaling pathway triggered by hepatitis B virus infection

Figure 4 HBV infection followed by UV radiation led to decreased cell apoptosis. A: HBV-positive serum was added to the culture medium before UV radiation treatment. Cells were washed extensively 24 h after HBV-positive serum addition and then treated with 8 s of UV radiation. Cell cycle profile was examined by propidium iodide staining and flow cytometry at indicated times after UV treatment; B: Apoptosis percentage after UV radiation followed HBV infection. Mean and standard error are presented for three independent experiments.