HI increases Olig1 promoter activation within the striatum and cortex. Coronal sections from the Olig1-EGFP reporter mouse showed an increase in GFP+ cells 7 dpl within the striatum: control (A), lesion (A′), quantification of GFP+ cells (error bars represent SEM, n = 5 controls and 9 lesions, ∗ p = 0.028) (A″); a decrease in GFP+ within the corpus callosum: control (B), lesion (B′), quantification (∗ p = 0.0004) (B″), and an increase in GFP+ cells within the intact peri-infarct cortex: control (C), lesion (C′), quantification (∗ p = 0.007) (C″).