Inhibition of Phospholipase Cγ1 by the Prenylated Flavonoids from Sophora flavescens - Lee, Hyun Sun; Ko, Hack Ryong; Ryu, Shi Yong; Oh, Won Keun; Kim, Bo Yeon; Ahn, Soon Cheol; Mheen, Tae Ik; Ahn, Jong Seog (Planta Medica, 1997)