On the biochemical mechanism of the visual process.
D000818:Animals; D002417:Cattle; D066298:In Vitro Techniques; D010786:Photoreceptor Cells / Q000502:physiology*; D012168:Retinal Pigments / Q000378:metabolism*; D014785:Vision, Ocular / Q000502:physiology*
D012168:Retinal Pigments