title: Chemical synthesis of [1 beta-3H] 1 alpha, 25-dihydroxyvitamin D3 and [1 alpha-3H] 1 beta, 25-dihydroxyvitamin D2: biological activity of 1 beta, 25-dihydroxyvitamin D3.
mesh_terms: D000818:Animals; D001681:Biological Assay; D001842:Bone and Bones / Q000378:metabolism; D002118:Calcium / Q000097:blood / Q000378:metabolism*; D004100:Dihydroxycholecalciferols / Q000138:chemical synthesis* / Q000494:pharmacology; D006887:Hydroxycholecalciferols / Q000138:chemical synthesis*; D007408:Intestinal Absorption / Q000187:drug effects; D051381:Rats; D013329:Structure-Activity Relationship
chemical_list: D004100:Dihydroxycholecalciferols; D006887:Hydroxycholecalciferols; D002118:Calcium