Mass SpectrometryMetabolomicsChromatography, High Pressure LiquidMetabolomeChromatography, LiquidTandem Mass SpectrometrySpectrometry, Mass, Electrospray IonizationGas Chromatography-Mass SpectrometrySpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationChromatography, AffinityChromatography, GasProteomicsChromatography, Ion ExchangeChromatography, GelMagnetic Resonance SpectroscopyChromatography, Thin LayerChromatographyMolecular Sequence DataPrincipal Component AnalysisAmino Acid SequenceProteomeReproducibility of ResultsSpectrometry, Mass, Secondary IonReference StandardsMetabolic Networks and PathwaysChromatography, Reverse-PhaseSpectrometry, Mass, Fast Atom BombardmentAmino AcidsMolecular WeightCalibrationMetabolismSpectrophotometry, UltravioletElectrophoresis, Polyacrylamide GelIsotope LabelingBiological MarkersPeptidesIonic LiquidsElectrophoresis, Gel, Two-DimensionalSolid Phase ExtractionMolecular StructureLimit of DetectionSensitivity and SpecificityElectrophoresis, CapillaryPeptide MappingCarbohydrate SequencePeptide FragmentsIndicators and ReagentsKineticsLeast-Squares AnalysisFatty AcidsCattleTrypsinDrug StabilityChemical FractionationLiverOxidation-ReductionBiotransformationDeuterium Exchange MeasurementAcetonitrilesProteinsOligosaccharidesUrinalysisTime FactorsMicrochemistryHydrogen-Ion ConcentrationIsomerismSolid Phase MicroextractionCarnitineLiquid CrystalsHydrolysisSubstrate SpecificityChromatography, DEAE-CelluloseNuclear Magnetic Resonance, BiomolecularStereoisomerismProtein BindingSubstance Abuse DetectionSoftwareDeuteriumPolysaccharidesIonsCarbohydrate ConformationRecombinant ProteinsCitric Acid CycleEscherichia coliAlgorithmsChemistryVolatile Organic CompoundsCluster AnalysisModels, BiologicalGlycosylationDiscriminant AnalysisChromatography, AgaroseCarbohydratesChemical PhenomenaPlant ExtractsChemistry Techniques, AnalyticalBiosynthetic PathwaysFertile PeriodProtein Processing, Post-TranslationalGene Expression Profiling