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一株牛肠道病毒的分离与鉴定 被引量:7

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摘要 本研究从山西某奶牛场的泌乳奶牛粪便样品中分离得到一株牛肠道病毒(BEV),命名为HLJ-3531/2013。理化特性鉴定结果表明,该病毒粒子呈典型小1KNA病毒粒子形态,直径为25~30nm,无囊膜;该病毒在pH3~9时稳定,对氯仿、乙醚、胰酶等均有一定的抗性,但50℃可迅速被破坏,1mol/LMgSO4能显著提高该病毒对热的抵抗力。采用随机引物通过RT—PCIK扩增获得病毒部分VP2及VP4蛋白编码区的DNA片段,序列分析结果表明,其核苷酸序列与GenBank登录的参考病毒株核苷酸序列同源性为65.0%-79.2%,其中与德国分离株D3/98株同源性最高,为79.2%。进化树分析其可能为EV—E种群中新的基因型。此前中国已分离得到的三株牛肠道病毒均为EV-F,该病毒株与中国已分离株分属于不同的血清型。
出处 《中国奶牛》 2015年第5期31-34,共4页 China Dairy Cattle
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参考文献13

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共引文献38

同被引文献30

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