title: Metabolism and biological activity of vitamin D.
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism; D002645:Chickens; D002762:Cholecalciferol / Q000378:metabolism*; D007275:Injections, Intravenous; D007421:Intestine, Small / Q000378:metabolism; D008099:Liver / Q000378:metabolism; D051381:Rats; D014807:Vitamin D / Q000378:metabolism*
chemical_list: D014807:Vitamin D; D002762:Cholecalciferol; D002118:Calcium