title: Effect of methionine supplementation of a protein-free diet on the nitrogen excretion in rats and pigs.
mesh_terms: D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D004044:Dietary Proteins; D005503:Food Additives; D008297:Male; D008715:Methionine; D009584:Nitrogen / Q000652:urine*; D051381:Rats; D013552:Swine; D014508:Urea / Q000652:urine
chemical_list: D004044:Dietary Proteins; D005503:Food Additives; D014508:Urea; D008715:Methionine; D009584:Nitrogen