Spectrometry, Mass, Electrospray IonizationTandem Mass SpectrometryChromatography, LiquidChromatography, High Pressure LiquidMass SpectrometryProteomicsGlycerophospholipidsDNA AdductsMolecular StructureEquileninReproducibility of ResultsEquilinDeuteriumElectrophoresis, Gel, Two-DimensionalProteomeSolid Phase ExtractionSensitivity and SpecificitySpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationMolecular Sequence DataCeramidesIsatisAmino Acid SequenceBromisovalumAtmospheric PressureReference StandardsGas Chromatography-Mass SpectrometryMicrochemistryIndicators and Reagents