Tandem Mass SpectrometryMass SpectrometrySpectrometry, Mass, Electrospray IonizationChromatography, LiquidSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationChromatography, High Pressure LiquidProteomicsDNA FragmentationGas Chromatography-Mass SpectrometryProteomeMolecular Sequence DataAmino Acid SequencePeptidesSpectrometry, Mass, Fast Atom BombardmentElectrophoresis, Gel, Two-DimensionalSolid Phase ExtractionNeonatal ScreeningMolecular StructureReproducibility of ResultsSpectrometry, Mass, Secondary IonReference StandardsTandem Repeat SequencesCalibrationIonsPeptide MappingIsotope LabelingMetabolism, Inborn ErrorsLimit of DetectionSensitivity and SpecificityProteinsSequence Analysis, ProteinPeptide FragmentsIndicators and ReagentsDatabases, ProteinComplex MixturesDeuteriumTrypsinIsomerismDeuterium Exchange MeasurementIndicator Dilution TechniquesChemical FractionationProtein Processing, Post-TranslationalCarbohydrate SequenceChromatography, Reverse-PhaseSubstance Abuse DetectionDried Blood Spot TestingAlgorithmsBiotransformationIsotopesFourier AnalysisAtmospheric PressureGasesMetabolomicsElectrophoresis, Polyacrylamide GelMagnetic Resonance SpectroscopySoftwareAcetonitrilesCattleProtein BindingApoptosisOxygen IsotopesOxidation-ReductionGlucuronidesPhosphopeptidesOligosaccharidesBlood Specimen CollectionMicrochemistryGlycosylationAconitumAnalytic Sample Preparation MethodsCarnitineDrug StabilityGlycerophospholipidsElectrophoresis, CapillaryPolysaccharidesModels, MolecularTime FactorsCarbohydrate ConformationModels, ChemicalPaperBiological MarkersMolecular WeightDNA AdductsBase SequenceHydrolysisSpectroscopy, Fourier Transform InfraredCyclotronsNanotechnologyStereoisomerismChromatography, Thin LayerPhosphorylationDrug ResiduesImmunoassayRecombinant ProteinsLysineBinding SitesCell LineBacterial ProteinsChromatography, GasCysteine