title: Trace-element nutrition.
mesh_terms: D003300:Copper / Q000172:deficiency; D003677:Deficiency Diseases / Q000175:diagnosis*; D006801:Humans; D007223:Infant; D007228:Infant Nutrition Disorders / Q000175:diagnosis*; D009747:Nutritional Physiological Phenomena; D009751:Nutritional Requirements; D012643:Selenium / Q000172:deficiency; D014131:Trace Elements; D015032:Zinc / Q000172:deficiency
chemical_list: D014131:Trace Elements; D003300:Copper; D012643:Selenium; D015032:Zinc