Synthesis of vitamin D3 and related compounds.
D000818:Animals; D002762:Cholecalciferol / Q000096:biosynthesis*; D002784:Cholesterol / Q000378:metabolism; D004875:Ergosterol / Q000378:metabolism; D006801:Humans; D006900:Hydroxylation; D008745:Methylation; D011284:Pregnenolone / Q000378:metabolism; D013265:Stigmasterol / Q000378:metabolism
D002762:Cholecalciferol; D011284:Pregnenolone; D002784:Cholesterol; D013265:Stigmasterol; D004875:Ergosterol