title: The role of donor epithelium in perforating keratoplasty.
mesh_terms: D003315:Cornea / Q000166:cytology; D016039:Corneal Transplantation; D004847:Epithelial Cells; D006084:Graft Rejection; D006801:Humans; D007801:Langerhans Cells / Q000276:immunology; D014181:Transplantation Immunology