Fig. 7

Proliferative activity of human oligodendrocyte progenitor cells at 6 weeks and 3 months post-transplantation. Only rare HNu(+) transplant-derived cells (red) are Ki67(+) cycling cells (green) (arrow, the color turns into yellow because of overlapping with red color from HNu) at the transplantation site at 6 weeks (a) or, after migration, in the corpus callosum (cc) at 3 months (b). Images are from a representative impact acceleration-injured rat. Scale bars = 50 μm