title: Early corneal changes in vitamin A deficient rats.
mesh_terms: D000818:Animals; D003315:Cornea / Q000648:ultrastructure*; D004848:Epithelium / Q000648:ultrastructure; D005260:Female; D005856:Germ-Free Life; D008297:Male; D008855:Microscopy, Electron, Scanning; D009389:Neovascularization, Pathologic; D051381:Rats; D014212:Tretinoin / Q000008:administration & dosage; D014802:Vitamin A Deficiency / Q000473:pathology*
chemical_list: D014212:Tretinoin