Preliminary report on the determination of blood urea nitrogen using individual chromatography papers.
D001806:Blood Urea Nitrogen; D002854:Chromatography, Paper; D006801:Humans; D009584:Nitrogen / Q000097:blood*; D014508:Urea / Q000097:blood*
D014508:Urea; D009584:Nitrogen
NITROGEN/blood; UREA/blood