Stimulative effects of saponin from kikyo-to, a Japanese herbal medicine, on pancreatic exocrine secretion of conscious rats - Arai,I.; Komatsu,Y.; Hirai,Y.; Shingu,K.; Ida,Y.; Yamaura,H.; Yamamoto,T.; Kuroiwa,Y.; Sasaki,K.; Taguchi,S. (Planta Med, 1997)