Studies on Chemical Constituents of Fritillaria thunbergii Miq. Studies on antitumor effects of podophyllotoxin nanoliposome Determination of Podophyllotoxin Content in the Root andd Rhizoma of Podophyllum emodi Wall.by HPLC Chemical constituents from Dysosma versipellis Construction of Suppression Subtractive Hybridization Library from the Root and Rhizome of Dysosma tsayuensis Ying and Sinopodophyllum hexandrum (Royle) Ying Studies on the Chemical Constituents of the Fruit of Sinopodophyllum emodi Percutaneous permeation characteristic of podophyllotoxin ethosomes in vitro Correlation research on contents of podophyllotoxin and total lignans in Sinopodophyllum hexandrum and ecological factors Effect of topographical factors on podophyllotoxin content in Sinopodophyllum hexandrum and study on ecological suitability Percutaneous permeation characteristic of podophyllotoxin ethosomes in vitro Mechanism of Podophyllotoxin rheinate (RH-01) on human osteoma sarcomatosum cells growth Research progress in Sinopodophyllum emodi Chemical constituents from Dysosma versipellis Review on biosynthesis of podophyllotoxin Study on Constituents of Dysosma tsayuensis Ying Biotransformation of podophyllotoxin by cell suspension culture and root culture of Rheum palmatum