title: Standardization of nitrogen-balance experiments with rats. II. Experimental procedure and techniques used in the evaluation of the experiments.
mesh_terms: D000818:Animals; D000830:Animals, Laboratory / Q000378:metabolism*; D002364:Caseins / Q000378:metabolism; D005069:Evaluation Studies as Topic; D005243:Feces / Q000032:analysis; D006799:Housing, Animal; D008297:Male; D009584:Nitrogen / Q000032:analysis / Q000378:metabolism* / Q000652:urine; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D002364:Caseins; D009584:Nitrogen