Specific plant terpenoids and lignoids possess potent antiviral activities against severe acute respiratory syndrome coronavirus - Wen, C C; Kuo, Y H; Jan, J T; Linag, P H; Wang, SY; Liu, H G; Lee, C K; Chang, S T; Kuo, C J; Lee, S S; Hou, C C; Hsiao, P W; Chien, S C; Shyur, L F; Yang, N S (J Med Chem, 2007)