PDGFRβ+is expressed in nonneural tissue formed after brain lesion. (A) Representative brain coronal sections 14 days after cortical injury. All panels show identical areas with PDGFRβ staining, NG2-DsRed, Nestin-GFP+, Hoechst, and combined fluorescent images. Note that although type-1 pericytes accumulate in the nonneural tissue formed after brain contusion, they differ from PDGFRβ+ cells. (B) Percentage of NG2-DsRed– and NG2-DsRed+ cells expressing PDGFRβ. Scale bar = 100 μm.