title: Ion gradients and metabolic activity in the generation of cone and rod responses.
mesh_terms: D000818:Animals; D002118:Calcium / Q000502:physiology*; D010856:Columbidae; D008564:Membrane Potentials; D010042:Ouabain / Q000494:pharmacology; D010786:Photoreceptor Cells / Q000187:drug effects / Q000502:physiology*; D011188:Potassium / Q000502:physiology*; D051381:Rats; D012964:Sodium / Q000502:physiology*
chemical_list: D010042:Ouabain; D012964:Sodium; D011188:Potassium; D002118:Calcium