Asprellcosides B of Ilex asprella Inhibits Influenza A Virus Infection by Blocking the Hemagglutinin- Mediated Membrane Fusion oleh Wen Zhang, Si-Tai Chen, Qiu-Yan He, Li-Quan Huang, Xiong Li, Xiao-Ping Lai, Xiao-Ping Lai, Shao-Feng Zhan, Hui-Ting Huang, Xiao-Hong Liu, Jianguo Wu, Jianguo Wu, Geng Li