Mass SpectrometryComplex MixturesTandem Mass SpectrometrySpectrometry, Mass, Electrospray IonizationSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationChromatography, LiquidChromatography, High Pressure LiquidGas Chromatography-Mass SpectrometryProteomicsMolecular Sequence DataProteomeAmino Acid SequenceSpectrometry, Mass, Secondary IonMolecular StructurePeptidesMagnetic Resonance SpectroscopySpectrometry, Mass, Fast Atom BombardmentElectrophoresis, Gel, Two-DimensionalReproducibility of ResultsProteinsIonic LiquidsHydrocarbonsIsotope LabelingChromatography, GasPeptide MappingCarbohydrate SequenceIonsReference StandardsEnvironmental MonitoringPolycyclic CompoundsChromatography, Thin LayerSensitivity and SpecificityAir PollutantsEnvironmental PollutantsWater Pollutants, ChemicalModels, ChemicalChemical FractionationOrganic ChemicalsMetabolomicsPeptide FragmentsFuel OilsCalibrationDeuterium Exchange MeasurementPolycyclic Hydrocarbons, AromaticCattleLiquid CrystalsChemistry Techniques, AnalyticalVolatilizationTrypsinGasesOligosaccharidesPetroleumBiotransformationPolychlorinated BiphenylsProtein BindingMolecular WeightSolid Phase ExtractionLimit of DetectionPolysaccharidesKineticsIsomerismElectrophoresis, Polyacrylamide GelChromatography, Ion ExchangeSmogOxidation-ReductionPlant ExtractsTime FactorsDNA AdductsSolventsDeuteriumModels, MolecularIndicators and ReagentsAmino AcidsProtein Processing, Post-TranslationalHydrolysisOdorsCarcinogensAlgorithmsGlycosylationEscherichia coliBiological AssayToxicity TestsBase SequenceNanotechnologySpectroscopy, Fourier Transform InfraredBenzo(a)pyreneSubstance Abuse DetectionChemical PhenomenaMutagenicity TestsGlycopeptidesBacterial ProteinsBody Mass IndexDioxinsSpectrophotometry, UltravioletEstersUnited States Environmental Protection AgencyModels, BiologicalBiological MarkersEnvironmental ExposureRecombinant Proteins