Hypoglycemic Effect of the Rhizomes of Polygala senega in Normal and Diabetic Mice and its Main Component, the Triterpenoid Glycoside Senegin-II - Kako, Mami; Miura, Toshihiro; Nishiyama, Yumi; Ichimaru, Momoyo; Moriyasu, Masataka; Kato, Atsushi (Planta Medica, 1996)