1Bother A. et al. Appearance of acute PRRS - like symptoms in sow terinary Record 1997,141:497 - 499.
2Shin J, et al, Monitoring of PRRSV infection in boars. Veterinary Microbiology 1997.55 : 337 - 346.
3Magar R, et al. Differential reaetivity of a monoclonal antibody directed to the membrane protein of PRRSV, Cauadian Journal of Veterinary Research 1997,61:69- 71.
9[12]Yoon K J,Joo H S,Goyal S M,et al.A modified serum neutralization test for the detection of antibody to porcine reproductive and respiratory syndrome virus in swine sera.J Vet Diagn Invest,1994,6:289～292
