title: Improved methodology for the analysis of plasma vitamin D metabolites.
authors.affiliation: USDA, Agricultural Research Service, National Animal Disease Center, Ames, Iowa.
authors.forename: R L
authors.initials: RL
authors.lastname: Horst
authors.forename: T A
authors.initials: TA
authors.lastname: Reinhardt
authors.forename: B W
authors.initials: BW
authors.lastname: Hollis
mesh_terms: D000818:Animals; D002417:Cattle; D002762:Cholecalciferol / Q000097:blood; D002845:Chromatography; D002851:Chromatography, High Pressure Liquid; D004100:Dihydroxycholecalciferols / Q000097:blood*; D004872:Ergocalciferols / Q000097:blood; D018167:Receptors, Calcitriol; D011987:Receptors, Steroid / Q000302:isolation & purification; D013950:Thymus Gland / Q000737:chemistry
chemical_list: D004100:Dihydroxycholecalciferols; D004872:Ergocalciferols; D018167:Receptors, Calcitriol; D011987:Receptors, Steroid; D002762:Cholecalciferol