title: Letter: The sodium-pumping mechanism of the toad bladder.
mesh_terms: D000818:Animals; D001001:Anura; D001692:Biological Transport; D002462:Cell Membrane; D004847:Epithelial Cells; D009092:Mucous Membrane / Q000166:cytology; D012704:Serous Membrane / Q000166:cytology; D012964:Sodium / Q000378:metabolism*; D001743:Urinary Bladder / Q000166:cytology / Q000502:physiology*
chemical_list: D012964:Sodium