title: [Trace element requirement and deficiency].
mesh_terms: D002857:Chromium / Q000172:deficiency; D003300:Copper / Q000172:deficiency; D006801:Humans; D000090463:Iron Deficiencies; D009751:Nutritional Requirements; D014131:Trace Elements / Q000172:deficiency; D015032:Zinc / Q000172:deficiency
chemical_list: D014131:Trace Elements; D002857:Chromium; D003300:Copper; D015032:Zinc
vernacular_title: Spurenelementbedarf und-mangel.