1Victor A de la Puente-Redondo,Noemi Garcia,Cesar B,et al.Detection and subtyping of Actinobacillus stains by PCR-TFLP analysis of the tbpA and tbpB gene[J].Res Microbiol,2000,151:669-681.
7Done S H, Paton D J. Porcine reproductive and respiratory syndrome: clinical disease, pathology and immunosuppression [J]. Vet Rec, 1995, 136(2):32-35.
8Rapp-Gabrielson V J, Gabrielson D A. Prevalence of Haemophilus parasuis serovars among isolates from swine[J]. Am J Vet Res, 1992, 53(5):659-664.
9Rubies X, Kielstein P, Costa L, et al. Prevalence of Haemophilus parasuis serovars isolated in Spain from 1993 to 1997[J]. Vet Microbiol, 1999, 66(3):245-248.
10Angen O, Svensmark B, Mittal K R. Serological characterization of Danish Haemophilus parasuis isolates [J]. Vet Microbiol, 2004, 103(3-4):255-258.