Specific plant terpenoids and lignoids possess potent antiviral activities against severe acute respiratory syndrome coronavirus

Chih Chun Wen, Yueh Hsiung Kuo, Jia Tsrong Jan, Po Huang Liang, Sheng Yang Wang, Hong Gi Liu, Ching Kuo Lee, Shang Tzen Chang, Chih Jung Kuo, Shoei Sheng Lee, Chia Chung Hou, Pei Wen Hsiao, Shih Chang Chien, Lie Fen Shyur, Ning Sun Yang