Tryptophanase genetic engineering strain 色氨酸酶基因工程菌
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。
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