CarbonAza CompoundsNitrogenNitrogen FixationCarbon DioxideAzathioprineCarbon MonoxideNanotubes, CarbonNitrogen CompoundsNitrogen IsotopesNitrogen CycleNitrogen DioxideBlood Urea NitrogenAzacitidineCarbon IsotopesCarbon Monoxide PoisoningReactive Nitrogen SpeciesMolecular StructureNitrogen OxidesCarbon TetrachloridePII Nitrogen Regulatory ProteinsQuaternary Ammonium CompoundsCarbon SequestrationNitratesAmmoniaBiomassSoilCarbon DisulfideFertilizersSulfur CompoundsMagnetic Resonance SpectroscopyOxidation-ReductionMolecular Sequence DataStructure-Activity RelationshipSpiro CompoundsVolatile Organic CompoundsImmunosuppressive AgentsCulture MediaPlant LeavesKineticsAmino AcidsBiodegradation, EnvironmentalDose-Response Relationship, DrugCarbon Tetrachloride PoisoningBacterial ProteinsGlutamate-Ammonia LigaseUreaPlant RootsBacteriaHydrogen-Ion ConcentrationAtmosphereSymbiosisMutationNitrogen Mustard Compounds6-MercaptopurineStereoisomerismTime FactorsPlant ExtractsPhotosynthesisCarbon RadioisotopesGene Expression Regulation, BacterialFermentationAntimetabolites, AntineoplasticSmall Molecule LibrariesEcosystemOxygenPhenolsNitrogenaseHeterocyclic CompoundsFuransChromatography, High Pressure LiquidSulfhydryl CompoundsGas Chromatography-Mass SpectrometryOrganic ChemicalsAcetatesSoil MicrobiologyDrug Evaluation, PreclinicalTreesBenzamidinesOrganometallic CompoundsCarbon FootprintMethyltransferasesGlucoseGlutamineAcetyleneTemperatureBiphenyl CompoundsCarbohydrate MetabolismEscherichia coliCell Line, TumorAniline CompoundsInhibitory Concentration 50Mass SpectrometryNitroso CompoundsEnzyme InhibitorsModels, BiologicalSulfurGenes, BacterialSeawaterAnaerobiosis