STUDIES ON CHEMICAL CONSTITUENTS OF ZANTHOXYLUM ECHINOCARPUM HEMSLEY Simultaneous determination of three active compounds in root barks ofDictamnus dasycarpus by RP-HPLC Dermatopharmacokinetic studies of Liangfu cream in rat skin Effects of penetration enhancers on in vitro percutaneous absorption and amount retained in skin of paeonol, dictamnine, fraxinellone and glycyrrhetinic acid in Liangfu cream Anatomical Structures of Vegetable Organs of Dictamnus dasycarpus and Dictamnine Accumulation