title: Segregation of vitamin A1 and vitamin A2 cone pigments in the bullfrog retina.
mesh_terms: D000200:Action Potentials; D000818:Animals; D003623:Dark Adaptation; D066298:In Vitro Techniques; D010775:Photic Stimulation; D010786:Photoreceptor Cells / Q000502:physiology; D011892:Rana catesbeiana; D012160:Retina / Q000502:physiology*; D012168:Retinal Pigments / Q000502:physiology*; D013053:Spectrophotometry; D014801:Vitamin A / Q000031:analogs & derivatives / Q000502:physiology*
chemical_list: D012168:Retinal Pigments; C024366:vitamin A2; D014801:Vitamin A