Spectrometry, Mass, Electrospray IonizationTandem Mass SpectrometryMass SpectrometryChromatography, LiquidSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationChromatography, High Pressure LiquidProteomicsGas Chromatography-Mass SpectrometryMolecular Sequence DataAmino Acid SequenceMolecular StructureProteomeIonsCalibrationPeptidesSpectrometry, Mass, Fast Atom BombardmentReproducibility of ResultsSolid Phase ExtractionReference StandardsSpectrometry, Mass, Secondary IonAir IonizationSensitivity and SpecificityElectrophoresis, Gel, Two-DimensionalAtmospheric PressureLimit of DetectionGasesCyclotronsFourier AnalysisComplex MixturesDeuteriumIndicators and ReagentsGlycerophospholipidsPeptide MappingCarbohydrate SequenceIsomerismNeonatal ScreeningProteinsElectrophoresis, CapillaryDeuterium Exchange MeasurementIsotope LabelingPeptide FragmentsChromatography, Reverse-PhaseSubstance Abuse DetectionTrypsinMagnetic Resonance SpectroscopyMicrochemistryTandem Repeat SequencesModels, ChemicalNanotechnologyOligosaccharidesAcetonitrilesMetabolomicsChemical FractionationSequence Analysis, ProteinMetabolism, Inborn ErrorsSpectroscopy, Fourier Transform InfraredSolventsModels, MolecularIndicator Dilution TechniquesDrug StabilityOxidation-ReductionProtein Processing, Post-TranslationalMolecular WeightGlucuronidesPolysaccharidesProtein BindingAnalytic Sample Preparation MethodsCattleBiotransformationMetals, AlkaliCarbohydrate ConformationAlgorithmsGlycosylationMyoglobinSolutionsElectrophoresis, Polyacrylamide GelHydrogenHydrogen-Ion ConcentrationStereoisomerismHydrolysisSpectrophotometry, UltravioletDNA AdductsPhosphopeptidesDatabases, ProteinGlycerylphosphorylcholineBinding SitesChromatography, Thin LayerProtein ConformationCysteineChemistry Techniques, AnalyticalForensic MedicineRecombinant ProteinsDried Blood Spot TestingSphingolipidsKineticsIsotopesMonosaccharidesAldehydesLipidsBacterial Proteins