[1] Zhejiang Univ, Inst Cell Biol, Hangzhou 310058, Zhejiang, Peoples R China
[2] Zhejiang Univ, Minist Educ, Key Lab Conservat Biol Endangered Wildlife, Hangzhou 310058, Zhejiang, Peoples R China
[3] Zhejiang Univ, Minist Agr, Key Lab Anim Virol, Hangzhou 310058, Zhejiang, Peoples R China
[4] Albert Einstein Coll Med, Bronx, NY 10461 USA
[5] Northwestern Univ, Feinberg Sch Med, Ken & Ruth Davee Dept Neurol, Chicago, IL 60611 USA