title: Comparative value of various sources of nonspecific nitrogen for the human.
mesh_terms: D000596:Amino Acids / Q000008:administration & dosage / Q000032:analysis; D000601:Amino Acids, Essential / Q000008:administration & dosage* / Q000032:analysis; D002951:Citrates; D004044:Dietary Proteins / Q000592:standards*; D002523:Edible Grain; D005069:Evaluation Studies as Topic; D006801:Humans; D009584:Nitrogen / Q000008:administration & dosage / Q000032:analysis / Q000378:metabolism*; D009747:Nutritional Physiological Phenomena; D009751:Nutritional Requirements; D010940:Plant Proteins / Q000032:analysis / Q000592:standards; D000644:Quaternary Ammonium Compounds; D014508:Urea
chemical_list: D000596:Amino Acids; D000601:Amino Acids, Essential; D002951:Citrates; D004044:Dietary Proteins; D010940:Plant Proteins; D000644:Quaternary Ammonium Compounds; D014508:Urea; D009584:Nitrogen