title: Relation between protein contents of diets and biological values in germ-free rats.
mesh_terms: D000818:Animals; D004044:Dietary Proteins / Q000008:administration & dosage*; D005856:Germ-Free Life; D008297:Male; D009584:Nitrogen / Q000378:metabolism / Q000652:urine; D009753:Nutritive Value; D011506:Proteins / Q000378:metabolism*; D051381:Rats
chemical_list: D004044:Dietary Proteins; D011506:Proteins; D009584:Nitrogen