Studies on a missing reaction in the visual cycle.
D000818:Animals; D002417:Cattle; D003624:Darkness; D008954:Models, Biological; D010786:Photoreceptor Cells / Q000378:metabolism; D012160:Retina / Q000378:metabolism*; D012168:Retinal Pigments / Q000378:metabolism; D013057:Spectrum Analysis; D013237:Stereoisomerism; D013696:Temperature; D014316:Tritium; D014466:Ultraviolet Rays; D014785:Vision, Ocular; D014801:Vitamin A / Q000378:metabolism*
D012168:Retinal Pigments; D014316:Tritium; D014801:Vitamin A