9Hill H.Overview and history of mystery swine disease (swine infertility and respiratory syndrome) [C]//Proceedings of the Mystery Swine Disease Committee Meeting.Madison:Livestock Conservation Institute,1990 : 29-30.
10Collins J E, Benfield D A, Christianson W T, et al. Isolation of swine infertility and respiratory syndrome virus (isolate ATCCVR-2332) in North America and experimental reproduction of the disease in gnotobiotic pigs. [J ]. J Vet Diagn Invest, 1992, 4:117-126.
