Serum titers were tested by mouse neutralization test.

采用小鼠中和试验测定血清效价。

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The virus had a positive reaction with a neutralization test.

病毒可被牛传染性鼻气管炎病毒阳性血清中和；

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The virus had a positive reaction with a neutralization test.

病毒可被牛传染性鼻气管炎病毒阳性血清中和；

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