4Harding M J, Prud'Homme I, Rola J. Specificity and nucleotyping studies of a gp50-based polymerase chain reaction assay for detection of pseudorabies virus[J]. Can J Vet Res,1997,61(2):157-160.
5Lomniczi B, Blankenship M L, Ben-Porat T. Deletions in the genomes of pseudorabies virus vaccine strains and existence of four isomers of the genomes[J]. J Virol,1984,49(3):970-979.
6Petrovskis E A, Timmins J G, Gierman T M, et al. Deletions in vaccine strains of pseudorabies virus and their effect on synthesis of glycoprotein gp63[J]. J Virol,1986,60(3):1166-1169.
7Enquist L W,Husak P J, Banfield B W, et al. Infection and spread of alphaherpesviruses in the nervous system[J]. Adv Virus Res, 1998,51:237-347.
9Van Oirsebot J T.Intranasal vaccination of pigs against Aujeszky's disease: comparison with one or two doses of attenuated vaccines in pigs with high maternal antibody titres[J]. Ras Vet Sci, 1987,42(1):12-16.
