Doing PCR with Extracted the virusreplication form DNA, the result shows there is a 2.0kb band as the other strain PPV.All of these demonstrate that the virus has the same character as the PPV. So it isproved that the virus is a strain PPV.

• PCR扩增试验结果分离株和标准株都有一大小相同的约2kb条带。 结果证明：我们分离到的这株病毒为猪细小病毒。