Figure 3: The chromatograms of blank plasma (A), 200 ng·mL-1 paeonol standard (B), blank plasma spiked with 250 ng·mL-1 paeonol standard (C) , plasma sample 5 min after intragastric administration of purified paeonol (D), Moutan cortex decoction(E) and Rhubarbmoutan decoction (F).