Figure 7. Immunohistochemistry staining of the four groups ten weeks after transplantation. A, C, and E: The expression of CK12 was negative in the control group, AM group, and non-induced MSC group; G: The expression of CK12 was positive in the induced MSC group; B, D, and F: The expression of CK13 was positive in the control group, AM group, and non-induced MSC group; H: The expression of CK13 was negative in the induced MSC group, indicating that the epithelium of the induced group were the corneal source within the ten week observation period. The magnification was 200×.