[Purification and identification of avian influenza viruses causing mixed multi-infection].
Qiu
Baofeng
B
Key Laboratory of Animal Infectious Diseases of Ministry of Agriculture, Yangzhou University, Yangzhou 225009, China. baofengqiu2008@yahoo.cn
Liu
Wujie
W
Hu
Shunlin
S
Tang
Yinghua
Y
Peng
Daxin
D
Liu
Xiufan
X