title: The double-membrane model for sodium-absorbing epithelia: current status and questions for the future.
mesh_terms: D000818:Animals; D001693:Biological Transport, Active; D002462:Cell Membrane / Q000378:metabolism*; D004848:Epithelium / Q000378:metabolism; D008954:Models, Biological; D011898:Ranidae; D012867:Skin / Q000378:metabolism*; D012964:Sodium / Q000378:metabolism*
chemical_list: D012964:Sodium