title: Standardization of nitrogen-balance experiments with rats. I. Metabolism unit for evaluation of nutritients in rat experiments.
mesh_terms: D000818:Animals; D000830:Animals, Laboratory; D005898:Glass; D006799:Housing, Animal; D009584:Nitrogen / Q000378:metabolism; D010969:Plastics; D051381:Rats
chemical_list: D010969:Plastics; D009584:Nitrogen