侧子

哮喘患儿IL-4近侧启动子区克隆和多态性分析

Cloning and polymorphism analysis of IL-4 proximal promoter of asthmatic patients

目的对哮喘症患儿白细胞介素4（IL4）近侧启动子区进行克隆并分析其DNA序列的多态性。

Objective To clone and study the polymorphism of interleukin 4 ( IL 4 ) proximal promoter from asthmatic patients .

结论过敏性哮喘患儿IL4近侧启动子区DNA序列存在多态性，这可能与IL4基因异常表达及哮喘的发病有关。

Conclusion There were polymorphisms within the IL-4 proximal promoter of allergic asthmatic patients and these polymorphisms might result in aberrant expression of IL-4 gene and asthma .

该策略目的是使变换器逆变侧的广义零序子空间合成电压为零，从而使五相矩阵变换器逆变侧的输出电流谐波尽可能的减小。

The key of the proposed modulation strategy is to reduce the complex voltage to zero in the generalized zero sequence sub-space of inverter side .