Fig. 5From: “Quantity-effect” research strategy for comparison of antioxidant activity and quality of Rehmanniae Radix and Rehmannia Radix Praeparata by on-line HPLC-UV-ABTS assayThe contributions of the chromatographic peaks in the Dihuang and Shu Dihuang samples to the total activity. a Dihuang, b Shu DihuangBack to article page