Down-stream signaling analysis after IFNγ treatment under proliferative conditions. In a and b: Results from real-time quantitative PCRs expressed as ΔΔCT (IFNγ- minus IFNγ+) of PBS-treated control and IFNγ-treated groups for the indicated markers of proliferative NSPCs. Higher values indicate a higher gene expression. Values are means +/- standard error of mean (SEM). Experiments were performed in triplicate and repeated independently at least three times.