live vaccine短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 活疫苗 All of the above indicated that the gene deleted attenuated strain was constructed successfully, which provided a certain basis for further researching genetic live vaccine with the mutant strain. 这表明成功构建基因缺失减毒株，为进一步以此突变株作为基因工程弱毒活疫苗株开展研究奠定了一定的基础。 zgsyzz.ivdc.gov.cn