Endogenous nitrogen requirement.
D000328:Adult; D004044:Dietary Proteins; D005243:Feces / Q000032:analysis; D006801:Humans; D009584:Nitrogen / Q000032:analysis / Q000378:metabolism* / Q000652:urine; D009747:Nutritional Physiological Phenomena
D004044:Dietary Proteins; D009584:Nitrogen