1[1]Van Alstine W G,et al. Porcine reproductive and respiratory syndrome virus does not exacerbate mycoplasma hyopnermoniae infection in young pigs [J],Vet Microbiol,1995,49:297～303
2[2]Sirinarumitr T,et al. A Pneumo-virulent United States isolate of porcine reproductive and respiratory syndrome virus induces apoptosis in bystander cells both in vitro and in vivo[J]. J Gen Virol,1998,179:2989～2995
3[3]Oleksiewicz M B,Nielsen J.Effect of porcine reproductive and respiratory syndrome virus (PRRSV)on alveolar lung macrophage survival and fuction [J].Vet Microiol, 1999,66:15～27
4[4]Shibata I,et al.In vivo replication of porcine repproductire and respiratory syndrome virus in swine alveolar macrophages and change in the cell population on bronchialveolar lavage fluid after infection [J ].J Vet Med Sci,1997,59:539～543
5[5]Thanawongnuwech R,et al. Immunohistochemical detection of porcine reproductive and respiratory syndrome virus antigen in neurovascular lesions [J].J Vet Diagn Invest,1997,(9):334～337
6[6]Kreil T R,Eibl M M.Viral infection of macrophages profoundly alters requirements for induction of nitric oxide synthesis [J].Virology,1995,212:174～178
7[7]Shimizu M,et al. Changes of lymphocyte subpopulations in pigs infected with porcine reproductive and respiratory syndrome (RRS)virus [J].Vet Immunol Immunopathol,1996,50:19～27
8[8]Loemba H D,et al. Kinetics of humoral immune response to the major structural proteins of the porcine reproductive and respiratory syndrome virus [J].Arch Virol, 1996,141:751～761
9[9]Albina E,et al. Immune response in pigs infected with porcine reproductive and respiratory syndrome virus (PRRSV) [J].Vet Immunol Immunopathol, 1998,61:49～66
10[10]Rossow K D,et al. Chronological immunohistochemical detection and localization of porcine reproductive and respiratory syndrome virus in gnotobiotic pigs [J].Vet Pathol, 1996,33:551～556
10Rovira A, Balasch M , Segales J , et al. Experimental inoculation of conventional pigs with porcine reproductive and respiratory syndrome virus and porcine eireovirus 2 [ J ]. Journal of Virology,2002,76 ( 7 ) : 3232 - 3239.
