Objective to explore the change of DNA content, cell cycle distribution and expression of cell cycle regulatory elements in esophageal canceration course.
目的探讨食管上皮癌变过程中DNA含量、细胞周期分布的变化及多个相关的细胞周期调控因子的表达状况及其意义。
Objective: to increase the expression level of foreign gene by the optimization of the expressional regulatory elements in the cassette of interesting gene.
目的：优化哺乳动物细胞表达系统，提高目的基因的表达效率。
Analysis of P25 promoter activity, especially functional analysis of PSGF and BMFA regulatory elements, could be helpful in further understanding the mechanism of P25 expression and fine regulation.
通过对P25基因启动子的活性分析，尤其是对PS GF和BMFA调控元件的功能分析，有利于进一步了解P 25基因表达调控的精细机制。
Analysis of P25 promoter activity, especially functional analysis of PSGF and BMFA regulatory elements, could be helpful in further understanding the mechanism of P25 expression and fine regulation.
通过对P25基因启动子的活性分析，尤其是对PS GF和BMFA调控元件的功能分析，有利于进一步了解P 25基因表达调控的精细机制。
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