3Blacksell S D, Khounsy S, Boyle D B,et al. Phylogenetic analysis of the E2 gene of classical swine fever viruses from Lao PDR[ J ]. Virus Res ,2004,104( 1 ) :87 - 92.
4Van Gennip H G, Vlot A C, Hulst M M, et al. Determinants of virulence of classical swine fever virus strain Brescia [ J ]. J Virol, 2004,78(16) :8812 -8823.
5Mayer D, Hofmann M A, Tratschin J D. Attenuation of classical swine fever virus by deletion of the viral N (pro) gene[ J ]. Vaccine,2004,22(3 -4) :317 -328.
6Reimann I, Depner K, Trapp S. An avirulent chimeric Pestivirus with altered cell tropism protects pigs against lethal infection with classical swine fever virus[J]. Virology,2004,322 (1) :143 - 157.
7Floegel Niesmann G. Marker vaccines and companion diagnostic tests for classical swine fever[J]. Dev Biol (Basel). 2003,114:185 -191.
8萨姆布鲁克 J，弗里奇 E F，曼尼阿蒂斯 T．分子克隆实验指南[M]．2版．金冬雁，黎孟枫，译．北京：科学出版社，1992．
9Losinger WC.Economic impacts of reduced pork production associated with the diagnosis of Actinobacillus pleuropneumoniae on grower/finisher swine operations in the United States.Prev Vet Med,2005,68(2-4):181-193.
10Bosse JT,Janson H,Sheehan BJ,et al.Actinobacillus pleuropneumoniae:pathobiology and pathogenesis of infection.Microbes Infect,2002,4(2):225-235.
