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Establishment of Nested-PCR for detecting bovine viral diarrhea viruses from pig
Author(s): 
Pages: 654-657
Year: Issue:  5
Journal: Chinese Journal of Veterinary Science

Keyword:  猪源牛病毒性腹泻病毒 RT-PCR Nested-PCR;
Abstract: 根据GenBank中BVDV-1、BVDV-2、CSFV及新出现瘟病毒的基因序列,设计2对特异引物,建立了能鉴别诊断BVDV与CSFV的Nested-PCR检测方法;确定其方法的特异性、敏感性、稳定性。建立的Nested-PCR能从BVDV标准毒株、猪源BVDV毒株中扩增198bp特异性片段,对猪瘟病毒、猪繁殖与呼吸综合征病毒检测结果为阴性。结果表明,该方法具有较好特异性;其敏感性可检测到0.195fg RNA模板量;经重复性试验表明该方法具有良好稳定性。初步应用检测表明,猪BVDV阳性率较高,达36.0%;牛血清及其制品、猪瘟活疫苗BVDV污染严重。本试验建立的Nested-PCR具有敏感、特异和稳定等特点,可用于临床诊断和流行病学调查。
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