title: Calcium controls both sodium and potassium permeability of lens membranes.
mesh_terms: D000818:Animals; D002118:Calcium / Q000494:pharmacology*; D002463:Cell Membrane Permeability / Q000187:drug effects; D004553:Electric Conductivity; D066298:In Vitro Techniques; D007473:Ion Channels / Q000187:drug effects; D007908:Lens, Crystalline / Q000378:metabolism*; D011188:Potassium / Q000378:metabolism*; D011894:Rana pipiens; D012964:Sodium / Q000378:metabolism*
chemical_list: D007473:Ion Channels; D012964:Sodium; D011188:Potassium; D002118:Calcium