1Yuwen Y, Gao Y, Gao H, et al. Sequence analysis of the VP2 hypervariable region of eight very virulent infectious bursal disease virus isolates from the northeast of China [J]. Avian Dis, 2008, 52(2): 284-290.
1[1]Lukert P D, Saif Y M. Infectious bursal disease, Diseases of Poultry. 10th edit,721～738, Edited by Bw Caluek, Iowa State University Press. Ames USA.
2[2]Box P. World Poultry, 1989, 53:17～19.
3[3]Chette. N et al. Vet. Rec. 1989,125:271～272.
4[4]Van den Berg, T. P et al, Avi, Pathol, 1991,20:133～143.
5[5]Oppling. V. et al. Arch, Virol, 1991,199:211～223.
6[6]Tsukamoto, K et al. J. Vet. Med. Sci, 1992,54:153～155.
7[14]Bulow et al, Accute Virus infectious of poultry. Martinus Njjhott Netherland 1986,202～212.
