title: Epithelial metaplasia and the second anatomy.
mesh_terms: D002454:Cell Differentiation; D002828:Choristoma / Q000235:genetics / Q000473:pathology*; D004848:Epithelium / Q000473:pathology; D006801:Humans; D008679:Metaplasia / Q000235:genetics / Q000473:pathology*; D014411:Neoplastic Stem Cells / Q000166:cytology