Mass SpectrometryTandem Mass SpectrometryChromatography, High Pressure LiquidSpectrometry, Mass, Electrospray IonizationChromatography, LiquidSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationGas Chromatography-Mass SpectrometryProteomicsMolecular Sequence DataAmino Acid SequenceChromatography, AffinityChromatography, GasSpectrometry, Mass, Secondary IonProteomeChromatography, Thin LayerChromatography, Ion ExchangeChromatography, GelSpectrometry, Mass, Fast Atom BombardmentChromatographyElectrophoresis, Gel, Two-DimensionalReproducibility of ResultsPeptidesReference StandardsCalibrationChromatography, Reverse-PhaseMolecular StructureLimit of DetectionMolecular WeightSolid Phase ExtractionIsotope LabelingElectrophoresis, Polyacrylamide GelMagnetic Resonance SpectroscopyPeptide MappingSensitivity and SpecificitySpectrophotometry, UltravioletCarbohydrate SequenceDeuterium Exchange MeasurementPeptide FragmentsIndicators and ReagentsProteinsKineticsTrypsinCattleChemical FractionationIonsMetabolomicsDeuteriumElectrophoresis, CapillaryIonic LiquidsSubstance Abuse DetectionIsomerismAmino AcidsOligosaccharidesProtein BindingMicrochemistryBiotransformationAcetonitrilesDrug StabilityPolysaccharidesHydrogen-Ion ConcentrationHydrolysisBody Mass IndexStereoisomerismOxidation-ReductionCarbohydrate ConformationTime FactorsProtein Processing, Post-TranslationalAnalytic Sample Preparation MethodsGlycosylationFourier AnalysisSubstrate SpecificityMetabolomeRecombinant ProteinsEscherichia coliIsotopesComplex MixturesBacterial ProteinsChemistry Techniques, AnalyticalCyclotronsModels, MolecularBinding SitesCarbohydratesTemperatureSolventsBiological MarkersBase SequenceSequence Analysis, ProteinLiverPlant ExtractsChemistryIndicator Dilution TechniquesChemical PhenomenaBlood ProteinsBrain ChemistrySequence Homology, Amino AcidForensic MedicineOxygen IsotopesProtein ConformationChromatography, DEAE-CelluloseFatty Acids