Spectrometry, Mass, Electrospray IonizationMass SpectrometryTandem Mass SpectrometryChromatography, LiquidChromatography, High Pressure LiquidSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationAir IonizationMolecular StructureCyclotronsIonsGasesAtmospheric PressureCalibrationGlycerophospholipidsFourier AnalysisMolecular Sequence DataGas Chromatography-Mass SpectrometryReproducibility of ResultsDeuteriumReference StandardsAmino Acid SequenceComplex MixturesIndicators and ReagentsSensitivity and SpecificityElectrophoresis, CapillaryCarbohydrate SequenceSpectrometry, Mass, Fast Atom BombardmentIsomerismLimit of DetectionSolid Phase ExtractionPeptidesSolventsModels, ChemicalNanotechnologyMyoglobinMicrochemistrySolutionsHydrogen-Ion ConcentrationMetals, AlkaliSpectrometry, Mass, Secondary IonExplosive AgentsMagnetic Resonance SpectroscopyBenzyl AlcoholsDeuterium Exchange MeasurementProteinsFlame IonizationSpectroscopy, Fourier Transform InfraredHydrogenOligosaccharidesProteomicsPeptide MappingMolecular WeightCapillary ActionChromatography, Reverse-PhaseElectrochemistryModels, MolecularForensic SciencesPlasmalogensAcetonitrilesCrown EthersTrypsinSubstance Abuse DetectionMetabolomicsProtein ConformationPeptide FragmentsSpectrophotometry, UltravioletGlycerylphosphorylcholineMetalsSulfoglycosphingolipidsPolysaccharidesDrug StabilityOxidation-ReductionMolecular ConformationPhospholipidsHydrolysisCarbohydrate ConformationOligonucleotidesProteomePhase TransitionMethanolStereoisomerismElectrophoresis, Gel, Two-DimensionalChemistry Techniques, AnalyticalDimenhydrinateMonosaccharidesHorsesDisulfidesLipidsCapillary ElectrochromatographyKineticsBinding SitesDiethylaminesCoordination ComplexesCattleDrugs, Chinese HerbalMuramidaseDisaccharidesCerebrosidesEquipment DesignCysteine