In vivo survival and integration of transplanted cells. (A, B) Transplanted cells emit blue fluorescence and are observed in the pericontusional brain tissue of rats, which suggests grafted NSCs can survive in host tissue. (C, D) Similarly, transplanted CM-Dil-labeled OECs survive in the brain tissue of rats. (E) Combined transplantation of NSCs and OECs increases the number of surviving NSCs (P <0.05 versus NSC group). Scale bars = 100 μm, shown in (A) and (C). *Statistical significance of P <0.05. CM-Dil, chloromethyl-benzamidodialkyl carbocyanine; NSC, neural stem cell; OEC, olfactory en sheathing cell.