title: Introduction: nitrate reduction and the nitrogen cycle.
authors: School of Biological Sciences, University of East Anglia, Norwich, United Kingdom. d.richardson@uea.ac.uk
authors: D J
authors: DJ
authors: Richardson
mesh_terms: D005057:Eukaryotic Cells / Q000378:metabolism; D009566:Nitrates / Q000378:metabolism*; D009584:Nitrogen / Q000378:metabolism; D010084:Oxidation-Reduction; D011387:Prokaryotic Cells / Q000378:metabolism
chemical_list: D009566:Nitrates; D009584:Nitrogen