A long view of nitrogen metabolism.
D000594:Amino Acid Oxidoreductases / Q000378:metabolism; D000596:Amino Acids / Q000378:metabolism; D001120:Arginine / Q000378:metabolism; D001671:Biochemistry / Q000266:history*; D003605:D-Amino-Acid Oxidase / Q000378:metabolism; D049673:History, 20th Century; D007553:Isotope Labeling; D009584:Nitrogen / Q000378:metabolism*; D011506:Proteins / Q000378:metabolism; D014481:United States; D014508:Urea / Q000378:metabolism
D000596:Amino Acids; D011506:Proteins; D014508:Urea; D001120:Arginine; D000594:Amino Acid Oxidoreductases; D003605:D-Amino-Acid Oxidase; D009584:Nitrogen