title: Biological activity of 1,25-dihydroxycholecalciferol.
mesh_terms: D000818:Animals; D001681:Biological Assay; D002118:Calcium / Q000097:blood / Q000378:metabolism; D002127:Calcium Isotopes; D002247:Carbon Isotopes; D055598:Chemical Phenomena; D002621:Chemistry; D002762:Cholecalciferol / Q000096:biosynthesis / Q000302:isolation & purification / Q000378:metabolism / Q000494:pharmacology / Q000627:therapeutic use; D002845:Chromatography; D002850:Chromatography, Gel; D004386:Duodenum / Q000187:drug effects / Q000378:metabolism; D007408:Intestinal Absorption / Q000187:drug effects; D007421:Intestine, Small / Q000187:drug effects; D007700:Kinetics; D008297:Male; D051381:Rats; D014316:Tritium; D014808:Vitamin D Deficiency / Q000188:drug therapy
chemical_list: D002127:Calcium Isotopes; D002247:Carbon Isotopes; D014316:Tritium; D002762:Cholecalciferol; D002118:Calcium