Acetogenin and Prenylated Flavonoids from Helminthostachys zeylanica with Inhibitory Activity on Superoxide Generation and Elastase Release by Neutrophils - Huang, Yuan-Chao; Hwang, Tsong-Long; Yang, Yu-Liang; Wu, Shih-Hsiung; Hsu, Mei-Hua; Wang, Jih-Pyang; Chen, Sheng-Chih; Huang, Li-Jiau; Liaw, Chih-Chuang (Planta Medica, 2010)