Determination of diosgenin in Rhizoma Paridis by HPLC and TLC Quantitative analysis of steroidal saponins in Chinese material medica Rhizoma Paridis by HPLC-ELSD Antitumor activity of steroid saponins extracted from Paris polyphylla var.yunnanensis against lung adenocarcinoma cells in vitro and in vivo Analgesic and Ssdative Effects of Chinese Drug Rhizoma Paridis