1Jackwood D J, Saif Y M, Hughes J H. Nucleic acid and structural proteins of infectious bursal disease virus isolates belonging to serotype Ⅰ and Ⅱ[J]. Avian Dis, 1984,28(4): 990-1006.
4Liu H J, Giambrone J J, Dormitorio T. Detection of genetic variations in serotype 1 isolates of infectious bursal disease virus using polymerase chain reaction and restriction endonuclease analysis [J]. Virol Methods, 1994,48 : 281-291.
6K. Zierenberg,H. Nieper,T. P. van den Berg,C. D. Ezeokoli,M. Vo?,H. Müller. The VP2 variable region of African and German isolates of infectious bursal disease virus: comparison with very virulent, “classical” virulent, and attenuated tissue culture-adapted strains[J] 2000,Archives of Virology(1):113~125
7N. Eterradossi,D. Toquin,G. Rivallan,M. Guittet. Modified activity of a VP2-located neutralizing epitope on various vaccine, pathogenic and hypervirulent strains of infectious bursal disease virus[J] 1997,Archives of Virology(2):255~270