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Chemical constituents in RA, RAS and DBT. (a) The amounts of astragaloside IV, calycosin, formononetin in DBT of various ratios of RA to RAS. (b) The amounts of Ligustilide, ferulic acid and total polysaccharides in DBT of various ratios of RA to RAS. Values are in mg/g of dry material (normalized by each herb weight) with means ± SEM, n = 5, each with triplicate samples.
