title: The vitamin D endocrine system: steroid metabolism, hormone receptors, and biological response (calcium binding proteins).
mesh_terms: D015650:24,25-Dihydroxyvitamin D 3; D000818:Animals; D002117:Calcitriol / Q000502:physiology; D002135:Calcium-Binding Proteins / Q000032:analysis*; D003684:Dehydrocholesterols / Q000378:metabolism; D004100:Dihydroxycholecalciferols / Q000502:physiology; D006801:Humans; D008970:Molecular Weight; D010777:Photochemistry; D018167:Receptors, Calcitriol; D011987:Receptors, Steroid / Q000032:analysis*; D014807:Vitamin D / Q000378:metabolism / Q000502:physiology*
chemical_list: D002135:Calcium-Binding Proteins; D003684:Dehydrocholesterols; D004100:Dihydroxycholecalciferols; D018167:Receptors, Calcitriol; D011987:Receptors, Steroid; D014807:Vitamin D; D015650:24,25-Dihydroxyvitamin D 3; D002117:Calcitriol