Tandem Mass SpectrometryMass SpectrometrySpectrometry, Mass, Electrospray IonizationChromatography, LiquidSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationChromatography, High Pressure LiquidProteomicsGas Chromatography-Mass SpectrometryProteomeMolecular Sequence DataAmino Acid SequencePeptidesSpectrometry, Mass, Fast Atom BombardmentSolid Phase ExtractionElectrophoresis, Gel, Two-DimensionalNeonatal ScreeningMolecular StructureReproducibility of ResultsSpectrometry, Mass, Secondary IonReference StandardsTandem Repeat SequencesCalibrationPeptide MappingIsotope LabelingIonsSensitivity and SpecificityLimit of DetectionMetabolism, Inborn ErrorsMagnetic Resonance SpectroscopySequence Analysis, ProteinProteinsDatabases, ProteinIndicators and ReagentsDeuteriumComplex MixturesPeptide FragmentsIsomerismIndicator Dilution TechniquesDeuterium Exchange MeasurementTrypsinChemical FractionationAlgorithmsFourier AnalysisSubstance Abuse DetectionChromatography, Reverse-PhaseProtein Processing, Post-TranslationalCarbohydrate SequenceIsotopesDried Blood Spot TestingBiotransformationMetabolomicsSoftwareOxidation-ReductionOxygen IsotopesProtein BindingSpectroscopy, Fourier Transform InfraredAtmospheric PressureAcetonitrilesCattleSpectrophotometry, UltravioletGlucuronidesModels, MolecularElectrophoresis, Polyacrylamide GelGasesMicrochemistryPhosphopeptidesModels, ChemicalBlood Specimen CollectionOligosaccharidesDrug StabilityAnalytic Sample Preparation MethodsAconitumCarnitineGlycosylationGlycerophospholipidsElectrophoresis, CapillaryPolysaccharidesCarbohydrate ConformationPaperBinding SitesStereoisomerismBiological MarkersDNA AdductsProtein ConformationNanotechnologyBacterial ProteinsChromatography, Thin LayerBase SequenceMolecular WeightImmunoassayDrug ResiduesRecombinant ProteinsChromatography, GasLysineCyclotronsHydrolysisCysteineTime FactorsSequence Homology, Amino AcidAmino Acids