title: Letter: Evidence for photosensitive pigments in the pineal complex of the frog.
mesh_terms: D000818:Animals; D010786:Photoreceptor Cells / Q000648:ultrastructure*; D010870:Pineal Gland / Q000032:analysis / Q000502:physiology*; D011892:Rana catesbeiana; D011896:Rana temporaria; D012168:Retinal Pigments / Q000302:isolation & purification*; D013053:Spectrophotometry / Q000379:methods
chemical_list: D012168:Retinal Pigments