Mass SpectrometryChromatography, High Pressure LiquidTandem Mass SpectrometryChromatography, LiquidSpectrometry, Mass, Electrospray IonizationSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationGas Chromatography-Mass SpectrometryChromatography, AffinityChromatography, GasChromatography, Ion ExchangeChromatography, GelChromatography, Thin LayerProteomicsMolecular Sequence DataChromatographyAmino Acid SequenceProteomeSpectrometry, Mass, Secondary IonReproducibility of ResultsChromatography, Reverse-PhaseSpectrometry, Mass, Fast Atom BombardmentReference StandardsCalibrationMolecular WeightSpectrophotometry, UltravioletElectrophoresis, Polyacrylamide GelPeptidesIonic LiquidsMolecular StructureElectrophoresis, Gel, Two-DimensionalLimit of DetectionMagnetic Resonance SpectroscopySolid Phase ExtractionSensitivity and SpecificityIsotope LabelingPeptide MappingCarbohydrate SequencePeptide FragmentsKineticsIndicators and ReagentsAmino AcidsCattleChemical FractionationTrypsinDrug StabilityProteinsBiotransformationDeuterium Exchange MeasurementAcetonitrilesOligosaccharidesHydrogen-Ion ConcentrationMicrochemistryMetabolomicsProtein BindingIsomerismStereoisomerismHydrolysisSubstrate SpecificityTime FactorsLiquid CrystalsChromatography, DEAE-CelluloseSubstance Abuse DetectionPolysaccharidesDeuteriumIonsOxidation-ReductionCarbohydrate ConformationEscherichia coliRecombinant ProteinsChemistry Techniques, AnalyticalGlycosylationPlant ExtractsChemistryLiverCarbohydratesChromatography, AgaroseChemical PhenomenaTemperatureMetabolomeProtein Processing, Post-TranslationalBacterial ProteinsAnalytic Sample Preparation MethodsSolventsBase SequenceElectrophoresis, CapillaryBinding SitesBody Mass IndexMethanolBrain ChemistryFourier AnalysisBiological MarkersComplex MixturesIsotopesQuality ControlMicrosomes, LiverIsoelectric FocusingAlgorithmsFatty AcidsCell LineModels, Molecular