title: Trace elements in nitrogen metabolism of plants and micro-organisms.
mesh_terms: D000594:Amino Acid Oxidoreductases / Q000378:metabolism; D001419:Bacteria / Q000201:enzymology / Q000378:metabolism; D003580:Cytochromes / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism*; D009586:Nitrogen Fixation; D010088:Oxidoreductases / Q000378:metabolism; D010944:Plants / Q000201:enzymology / Q000378:metabolism; D014131:Trace Elements / Q000378:metabolism*
chemical_list: D003580:Cytochromes; D014131:Trace Elements; D010088:Oxidoreductases; D000594:Amino Acid Oxidoreductases; D009584:Nitrogen