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。
Our laboratory has constructed a genetic engineering phytase strain E-22. Its hereditary stability and enzyme character can well meet production's need.
本实验室通过基因工程已构建了一株植酸酶高产基因工程菌e - 22，其遗传稳定性及酶学性质等均能很好的满足生产需要。
Our laboratory has constructed a genetic engineering phytase strain E-22. Its hereditary stability and enzyme character can well meet production's need.
本实验室通过基因工程已构建了一株植酸酶高产基因工程菌e - 22，其遗传稳定性及酶学性质等均能很好的满足生产需要。
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