title: Nutritional trace element research.
mesh_terms: D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D003677:Deficiency Diseases; D004032:Diet; D005260:Female; D006801:Humans; D009747:Nutritional Physiological Phenomena; D011247:Pregnancy; D012106:Research; D013997:Time Factors; D014131:Trace Elements; D014481:United States
chemical_list: D014131:Trace Elements