区域重复的英文

例句与用法

1. The upstream region - 419 - 90 of promoter camv35s was repeated 2 times manually , and then became enhancer e12which can improve promoting efficiency of promoter camvsss to 70 folds
   增强子e12是将camv35s启动子上游- 419 - 90区域重复2次所构成的序列，该序列可使camv35s启动子在双子叶植物中的启动效率提高70倍。