Trifluoroacetic AcidPerchloratesFluoroacetatesSolventsChromatography, High Pressure LiquidAcetic AcidAcetic AnhydridesChloroacetatesHydrochloric AcidMagnetic Resonance SpectroscopyChromatography, Reverse-PhaseCarcinoembryonic AntigenMethodsAmino AcidsSpectrometry, Mass, Electrospray IonizationSpectrophotometry, UltravioletMolecular StructureMass SpectrometryIndicators and ReagentsAutoanalysisChromatography, LiquidCyanogen BromidePhosphatesPeptidesChromatography, GelCarbon IsotopesChromophore-Assisted Light InactivationSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationHydrogen-Ion ConcentrationElectrophoresis, Polyacrylamide GelAmino Acid SequencePeptide FragmentsColonic NeoplasmsChromatography, Ion ExchangeMolecular Weight