WITHDRAWN: Natural recombination between Newcastle disease virus vaccine strains and circulating viruses.
This article has been retracted.
He
Cheng-Qiang
CQ
College of Life Science, Shandong Normal University, Jinan, China 250014; School of Biological Science and Technology, Central South University, Hunan Province 410012, China; Laboratory of Molecular Biology, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China.
Ding
Nai-Zheng
NZ
Han
Guan-Zhu
GZ
Liu
Wei
W