title: Perspectives in biological nitrogen fixation.
mesh_terms: D000114:Acetylene; D000383:Agriculture; D001395:Azotobacter / Q000378:metabolism; D001419:Bacteria / Q000378:metabolism*; D003013:Clostridium / Q000378:metabolism; D000458:Cyanobacteria / Q000378:metabolism*; D005288:Ferredoxins; D005308:Fertilizers / Q000009:adverse effects; D009584:Nitrogen / Q000378:metabolism / Q000494:pharmacology; D009586:Nitrogen Fixation; D009587:Nitrogen Isotopes; D010088:Oxidoreductases; D010944:Plants / Q000378:metabolism*; D012231:Rhizobium / Q000378:metabolism*; D013672:Technology
chemical_list: D005288:Ferredoxins; D005308:Fertilizers; D009587:Nitrogen Isotopes; D010088:Oxidoreductases; D009584:Nitrogen; D000114:Acetylene