Hepatoprotective Effect of Majonoside R2, the Major Saponin from Vietnamese Ginseng (Panax vietnamensis) - Tran, Quan Le; Adnyana, I Ketut; Tezuka, Yasuhiro; Harimaya, Yuko; Saiki, Ikuo; Kurashige, Youichi; Tran, Qui Kim; Kadota, Shigetoshi (Planta Medica, 2002)