Spectrometry, Mass, Electrospray IonizationTandem Mass SpectrometryChromatography, LiquidMass SpectrometryIonsChromatography, High Pressure LiquidProteomicsPeptidesComplex MixturesPhosphopeptidesProteomeSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationAmino Acid SequenceMolecular Sequence DataReproducibility of ResultsProteinsIsotope LabelingFourier AnalysisGasesInfrared RaysGas Chromatography-Mass SpectrometrySydnonesSpectroscopy, Fourier Transform InfraredTrypsinIsomerismIndicators and ReagentsGlycopeptidesCyclotronsSensitivity and SpecificityAtmospheric PressureOxygen IsotopesMolecular StructureHorsesNanotechnologyCarbohydrate SequenceElectronsEnkephalin, LeucineElementsCalibrationGrifolaSpacecraftPeptide MappingEquipment DesignReference StandardsSaturnSpectrometry, Mass, Secondary IonDeuteriumMyoglobinArgonSequence Analysis, ProteinChemical Warfare AgentsDatabases, ProteinProtonsEvolution, PlanetaryAlgorithmsCattlePeptide FragmentsMicrochemistryFullerenesEquipment Failure AnalysisFlowmetersModels, ChemicalExtraterrestrial EnvironmentSolid Phase MicroextractionSoftwareLimit of DetectionMiniaturizationSerum Albumin, Bovine