Previtamin D3 from skin.
D000818:Animals; D002762:Cholecalciferol / Q000096:biosynthesis*; D002775:Cholestadienols / Q000528:radiation effects*; D003684:Dehydrocholesterols / Q000378:metabolism / Q000528:radiation effects*; D051381:Rats; D012867:Skin / Q000378:metabolism / Q000528:radiation effects*; D014466:Ultraviolet Rays
D002775:Cholestadienols; D003684:Dehydrocholesterols; D002762:Cholecalciferol