title: The biological role of vitamin A in maintaining epithelial tissues.
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D004847:Epithelial Cells; D004848:Epithelium / Q000254:growth & development / Q000378:metabolism / Q000502:physiology*; D006801:Humans; D008099:Liver / Q000378:metabolism; D008954:Models, Biological; D051381:Rats; D012038:Regeneration; D014801:Vitamin A / Q000502:physiology*; D014802:Vitamin A Deficiency / Q000150:complications / Q000378:metabolism*
chemical_list: D014801:Vitamin A