2WANG L, PAN M, FU Y, et al. Classification of duck hepatitis virus into three genotypes based on molecular evolutionary analysis [ J ]. Virus Genes, 2008,37 ( 1 ) :52 - 59.
3WANG M,ZHANG J,ZHOU J H, et al. Analysis of codon usage in type 1 and the new genotypes of duck hepatitis virus [ J ]. Biosys- tems,2011,106( 1 ) :45 -50.
4Wang L,Pan M,Fu Y,et al.Classification of duck hepatitis virus into three genotypes based on molecular evolutionary a- nalysis [J].Virus Genes,2008,37(1):52-59.
5Broderson J R.A retrospective review of lesions associated with the use of Freunds adjuvant [J].Lab Anim Sci,1989,39(5):400-405.
6Mallon F M,Graichen M E,Conway B R,et al.Comparison of antibody response by use of synthetic adjuvant system and Fre- und complete adjuvants in rabbits [J].Am J Vet Res,1991,52(9):1503.
