Figure 4.

Immunohistochemical profile of healthy corneal tissue. Positive TCTP staining was observed in the basal and intermediate cell layers of the corneal epithelium (A-B); weak and focal staining was observed in keratocytes and along the endothelial cell layer (B, inset) [A, original magnification (O.M) 2.5x; B, O.M. 5x; inset, O.M. 2.5x].