Cnidicin, a coumarin, from the root of Angelica koreana, inhibits the degranulation of mast cell and the NO generation in RAW 264.7 cells. - Ryu,S.Y.; Kou,N.Y.; Choi,H.S.; Ryu,H.; Kim,T.S.; Kim,K.M. (Planta Med, 2001)