title: LETTERS TO THE EDITOR: A NEW SEMIMICRO METHOD FOR COLORIMETRIC DETERMINATION OF UREA NITROGEN.
mesh_terms: D001774:Blood Chemical Analysis; D001826:Body Fluids; D003124:Colorimetry; D008832:Microchemistry; D009584:Nitrogen; D012106:Research; D014508:Urea; D014556:Urine
chemical_list: D014508:Urea; D009584:Nitrogen
keywords: BLOOD CHEMICAL ANALYSIS; EXPERIMENTAL LAB STUDY; MICROCHEMISTRY; NITROGEN; UREA; URINE