title: A new model for nitrogen control.
mesh_terms: D001419:Bacteria / Q000235:genetics*; D004926:Escherichia coli / Q000235:genetics; D009154:Mutation; D009584:Nitrogen / Q000378:metabolism*; D009876:Operon; D012486:Salmonella typhimurium / Q000235:genetics; D013045:Species Specificity
chemical_list: D009584:Nitrogen