The liver produces urea in the urea cycle as a waste product of the digestion of protein. Normal human adult blood should contain between 6 and 20 mg of urea nitrogen per 100 ml (6â20 mg/dL) of blood. Individual laboratories will have different reference ranges as the assay used will vary between laboratories.
Created on 8/7/2006 GX Last updated on 10/4/2007 GX Page 2 of 10 Part 1: Reference Citations in Text (Chapter 3, pages 207-214) Throughout your paper, you should document your study by citing the author and date of the publications (journal articles, books, dissertations, etc) you used in your research.
APA essay title page. 1  Title page should be numbered in APA format. 2  A ârunning headerâ should be placed in the right corner at the top of the page next to the page number. 3  A ârunning headerâ in APA style contains a short title of the essay.  The essay title should be placed one-third of the page down from the top.