作者机构:[1]State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Biotechnology, Beijing 100071, China, [2]National Center of Biomedical Analysis, Beijing 100850, China
相关基金:Acknowledgements We thank Drs. Kai-Hua Wei and Jing Yuan for technical assistance and helpful discussion. This work was supported by the National Key Basic Research Program of China (973 Program, No. 2005CB522904) and the National Natural Science Foundation of China (No. 30470101).