Figure 6

CD133 expressed in both original tumors and the implanted tumors. Tumor sections were stained against human specific CD133 by common immunochemistry, rare cells were positive for CD133 both in original tumors (A) and transplantation tumors (B). It could also be seen that CD133 positive cells distributed at the border (red dash line) between tumor mass(bottom) and the adjacent brain parenchyma (top in C).