title: Problems in the assessment of nutrient requirements.
mesh_terms: D000747:Anemia, Hypochromic / Q000209:etiology; D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002417:Cattle; D002648:Child; D004044:Dietary Proteins / Q000378:metabolism; D005260:Female; D005457:Fluoridation; D006801:Humans; D008875:Middle Aged; D009747:Nutritional Physiological Phenomena; D009751:Nutritional Requirements; D010024:Osteoporosis / Q000517:prevention & control; D011200:Poultry; D012417:Rumen / Q000382:microbiology; D013552:Swine
chemical_list: D004044:Dietary Proteins