title: 1,25-Dihydroxyvitamin D3 and 24,25-dihydroxyvitamin d3: key components of the vitamin D endocrine system.
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism; D003600:Cytosol / Q000378:metabolism; D004100:Dihydroxycholecalciferols / Q000378:metabolism*; D006706:Homeostasis; D006801:Humans; D006887:Hydroxycholecalciferols / Q000378:metabolism*; D007413:Intestinal Mucosa / Q000378:metabolism; D010280:Parathyroid Glands / Q000502:physiology; D010281:Parathyroid Hormone / Q000502:physiology; D011955:Receptors, Drug / Q000378:metabolism; D014807:Vitamin D / Q000378:metabolism*; D014808:Vitamin D Deficiency / Q000378:metabolism
chemical_list: D004100:Dihydroxycholecalciferols; D006887:Hydroxycholecalciferols; D010281:Parathyroid Hormone; D011955:Receptors, Drug; D014807:Vitamin D; D002118:Calcium