Toona sinensis Roem tender leaf extract inhibits SARS coronavirus replication.

"This study is supported by a grant from the National Science Council of Taiwan, ROC (NSC 92-2751-B-182A-006-Y) and Chang Gung Memorial Hospital, Taiwan (BMRP743). The authors are thankful to Miss Ming-Chi Yang for her technical assistance. We thank Wu-Chang Chung PhD, the director of R&D department of Sun Ten Phytotech Co., Ltd. Taiwan, to provide extracts from five formula of TCM. We also thank Dr. Chung-Hwa Hsu to provide Chu-Gen-Tang, a new developed formula of TCM and Dr. Sheng-Teng Huang to provide three fractions of Phyllanthus urinaria. This article is written in memorial of Dr. Yong-Hsiang Lin, our colleague of department of Internal Medicine, Chang Gung Memorial Hospital, Kaohsiung Medical Center, devoted his young life upon the war against SARS in May, 2003 at Kaohsiung, Taiwan. We thank a million for Dr. Lin's mother to encourage us to do our best to find new agents against SARS-CoV."