title: [Structural modifications of the esophagus linked to osmoregulation in eels].
abstract: In comparison with the fresh-water Eel (Anguilla anguilla L.), the oesophagus of the sea-water Eel displays an almost complete regression of the multilayered epithelium and consequently the disappearance of mucous cells. In contrast, a large development of a columnaŕ epithelium is associated with a tremendous proliferation of the subepithelial vascularization. These modifications enable one to interpret the changes in ionic permeability of the oesophagus during transfer from freshwater to seawater.
mesh_terms: D000818:Animals; D001692:Biological Transport; D002712:Chlorides / Q000378:metabolism; D003593:Cytoplasm / Q000648:ultrastructure; D004524:Eels / Q000502:physiology*; D004847:Epithelial Cells; D004848:Epithelium / Q000648:ultrastructure; D004947:Esophagus / Q000098:blood supply / Q000166:cytology / Q000502:physiology; D008854:Microscopy, Electron; D008928:Mitochondria / Q000648:ultrastructure; D012623:Seawater; D012964:Sodium / Q000378:metabolism; D014882:Water-Electrolyte Balance
chemical_list: D002712:Chlorides; D012964:Sodium
vernacular_title: Modifications structurales de l'oesophage liées à l'osmorégulation chez l'anguille