title: Determination of vitamin D metabolites.
mesh_terms: D000818:Animals; D002645:Chickens; D002762:Cholecalciferol / Q000097:blood*; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004100:Dihydroxycholecalciferols / Q000378:metabolism; D004386:Duodenum / Q000378:metabolism; D011869:Radioligand Assay; D014807:Vitamin D / Q000378:metabolism*
chemical_list: D004100:Dihydroxycholecalciferols; D014807:Vitamin D; D002762:Cholecalciferol