title: The role of Ca2+ in maintaining the Na and K content of the amphibian lens.
mesh_terms: D000818:Animals; D002024:Bufo marinus / Q000378:metabolism*; D002118:Calcium / Q000502:physiology*; D002463:Cell Membrane Permeability; D004553:Electric Conductivity; D066298:In Vitro Techniques; D007908:Lens, Crystalline / Q000378:metabolism*; D011188:Potassium / Q000378:metabolism*; D012964:Sodium / Q000378:metabolism*
chemical_list: D012964:Sodium; D011188:Potassium; D002118:Calcium