... purdue attenuated strain 珀杜减毒株 attenuated strain mutant 减毒株变种 attenuated strain Machupo virus 麦丘波病毒减毒株 ...
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So it's has great significance to construct the mutant storehouse and slecte the toxicity weak Hps mutant strain for developing the genetic engineering attenuated vaccine.
如构建出突变体库，从中筛选出毒力减弱的副猪嗜血杆菌突变菌株，对研制出基因工程弱毒活疫苗具有重要意义。
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