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Studies on principal components and antioxidant activity of different Radix Astragali samples using high-performance liquid chromatography/electrospray ionization multiple-stage tandem mass spectrometry

BiochemistryMedicineBioanalysisMass SpectrometryAntioxidant ActivityDifferent Radix AstragaliAnalytical ChemistryPhytochemicalLiquid ChromatographyMetabolomicsPrincipal ComponentsPharmacologyChromatographic AnalysisPhytochemistryChromatographyDrug Analysis