Kaurane diterpenes from Isodon japonicus inhibit nitric oxide and prostaglandin E2 production and NF-kappaB activation in LPS-stimulated macrophage RAW264.7 cells - Hwang,B.Y.; Lee,J.H.; Koo,T.H.; Kim,H.S.; Hong,Y.S.; Ro,J.S.; Lee,K.S.; Lee,J.J. (Planta Med, 2001)