In comparison, the cKO brains showed significantly higher levels of NG2+Olig2+, Ki67+Olig2+, than the WT brains throughout 3–28-day post-stroke (Fig. 7a–b), with elevated NG2+Olig2+ and Ki67+Olig2+ counts both at the acute 3-day post-stroke (2.3-fold, p = 0.0005 and 2.8-fold, p < 0.0001, respectively) and the 28-day post-stroke chronic phase (1.8-fold, p = 0.036 and 1.3-fold, p = 0.016, respectively; Fig. 7a–b). This evidence concerns the gene OLIG2 and Stroke.