Figure 4. Expression of cytokeratin K3/K12, p63 and p75 in limbal, oral and conjunctival cultures. Immunohistochemistry was performed to detect the expression of cytokeratin K3/K12 (A), p63 (B), and p75 (C) in cultured limbal, oral, and conjunctival cells. The experiments were performed twice using sections from separate set of cultures and cells were observed at 400X magnification.