Cancer Chemopreventive Activity of Rotenoids from Derris trifoliata - Ito, Chihiro; Itoigawa, Masataka; Kojima, Naoki; Tan, Hugh T -W; Takayasu, Junko; Tokuda, Harukuni; Nishino, Hoyoku; Furukawa, Hiroshi (Planta Medica, 2004)