title: Role of Ca++ as a regulator of Na+ permeability in epithelia.
mesh_terms: D000818:Animals; D002118:Calcium / Q000502:physiology*; D002463:Cell Membrane Permeability; D003600:Cytosol / Q000378:metabolism; D004848:Epithelium / Q000378:metabolism; D066298:In Vitro Techniques; D007672:Kidney Cortex / Q000378:metabolism; D007687:Kidney Tubules, Proximal / Q000378:metabolism; D007700:Kinetics; D009337:Necturus; D010042:Ouabain / Q000494:pharmacology; D011817:Rabbits; D012964:Sodium / Q000378:metabolism*
chemical_list: D010042:Ouabain; D012964:Sodium; D002118:Calcium