title: Biological nitrogen fixation.
authors.affiliation: Department of Biochemistry, College of Agricultural and Life Sciences, University of Wisconsin-Madison 53706.
authors.forename: R H
authors.initials: RH
authors.lastname: Burris
authors.forename: G P
authors.initials: GP
authors.lastname: Roberts
mesh_terms: D015964:Gene Expression Regulation, Bacterial; D005798:Genes, Bacterial; D009586:Nitrogen Fixation; D009591:Nitrogenase / Q000235:genetics / Q000378:metabolism; D009747:Nutritional Physiological Phenomena; D010944:Plants / Q000378:metabolism / Q000382:microbiology
chemical_list: D009591:Nitrogenase