title: Parathyroid hormone as a trophic hormone for 1,25-dihydroxyvitamin D3, the metabolically active form of vitamin D.
mesh_terms: D002118:Calcium / Q000097:blood / Q000378:metabolism*; D002762:Cholecalciferol / Q000378:metabolism*; D005246:Feedback; D006801:Humans; D006900:Hydroxylation; D008099:Liver / Q000378:metabolism; D010281:Parathyroid Hormone / Q000502:physiology*
chemical_list: D010281:Parathyroid Hormone; D002762:Cholecalciferol; D002118:Calcium