title: Direct involvement of vitamin D in the regulation of 25-hydroxycholecalciferol metabolism.
mesh_terms: D000818:Animals; D002118:Calcium / Q000494:pharmacology; D002136:Calcium, Dietary; D002645:Chickens; D002762:Cholecalciferol / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D006887:Hydroxycholecalciferols / Q000378:metabolism*; D007668:Kidney / Q000166:cytology / Q000187:drug effects / Q000378:metabolism* / Q000473:pathology; D008928:Mitochondria / Q000187:drug effects / Q000378:metabolism*; D013997:Time Factors; D014808:Vitamin D Deficiency / Q000378:metabolism* / Q000473:pathology
chemical_list: D002136:Calcium, Dietary; D006887:Hydroxycholecalciferols; D002762:Cholecalciferol; D002118:Calcium