Suppression of interleukin-1 and tumor necrosis factor-alpha production by acanthoic acid, (-)-pimara-9(11),15-dien-19-oic acid, and its antifibrotic effects in vitro - Kang,H.-S.; Kim,Y.-H.; Lee,C.-S.; Lee,J.-J.; Choi,I.; Pyun,K.-H. (Cell Immunol, 1996)