Bleaching of rhodopsin in the dark.
D000645:Ammonium Sulfate; D000818:Animals; D002417:Cattle; D055598:Chemical Phenomena; D011232:Chemical Precipitation; D002621:Chemistry; D003624:Darkness; D007700:Kinetics; D008027:Light; D011830:Radiation Effects; D012168:Retinal Pigments / Q000302:isolation & purification / Q000528:radiation effects; D013053:Spectrophotometry; D014508:Urea
D012168:Retinal Pigments; D014508:Urea; D000645:Ammonium Sulfate