AmmoniaNitritesNitrite ReductasesSodium NitriteNitratesAmyl NitriteNitrosomonasNitric OxideNitrogenNitrate ReductasesNitrite Reductase (NAD(P)H)Carbamoyl-Phosphate Synthase (Ammonia)NitrificationNitrate ReductaseUreaGlutamate-Ammonia LigaseOxidation-ReductionGlutamineHyperammonemiaAmmonium ChlorideNitrosomonas europaeaNitrobacterNitrogen RadioisotopesHydrogen-Ion ConcentrationQuaternary Ammonium CompoundsAnaerobiosisNitric Oxide SynthaseMethemoglobinOxidoreductasesFerredoxin-Nitrite ReductaseHydroxylaminesGlutaminaseDenitrificationNitrogen IsotopesAmino AcidsHepatic EncephalopathyNitroso CompoundsGlutamate DehydrogenaseAcetyleneNitrogen CompoundsManureRumenBacteriaGillsHydroxylamineNitrous OxideBacteroidaceaeArginineKineticsPhenylalanine Ammonia-LyaseNitric Oxide Synthase Type IIArchaeaMethylaminesGlutamate SynthaseAlcaligenesCitrullineAutotrophic ProcessesAerobiosisMolecular Sequence DataBioreactorsGlutamatesBetaproteobacteriaMethionine SulfoximineNitrogen OxidesAcidosisUreaseFatty Acids, VolatileHemeOxygenFood PreservativesParacoccusAmino Acid OxidoreductasesAlcaligenes faecalisNitrosationSpectrophotometryXanthine DehydrogenaseCulture MediaOrnithineAirFish ProteinsSeawaterPhylogenyElectron Spin Resonance SpectroscopyOncorhynchus mykissBacterial ProteinsSoil MicrobiologySewageNADH, NADPH OxidoreductasesCytochromes c1Urea Cycle Disorders, InbornHemoglobinsPseudomonasCytochromesAminohydrolasesAnimal FeedPerseaAnion Transport ProteinsKetoglutaric AcidsFresh WaterRNA, Ribosomal, 16S