title: New ideas on vitamin D.
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism*; D004790:Enzyme Induction / Q000187:drug effects; D006801:Humans; D006887:Hydroxycholecalciferols / Q000096:biosynthesis / Q000378:metabolism*; D007668:Kidney / Q000378:metabolism; D008099:Liver / Q000201:enzymology; D010281:Parathyroid Hormone / Q000378:metabolism*
chemical_list: D006887:Hydroxycholecalciferols; D010281:Parathyroid Hormone; D002118:Calcium