Expression of exogenous gene的用法和樣例：
例句
- Site-specific recombination technology provides an important means for regulating transgene expression and improving efficiency of gene transformation.
摘要定點重組轉基因技術是調節外源基因表達，提高轉基因效率的重要手段之一。 - Activation of an internal gene requires generation of new sequences.
內源基因的激活需要新序列的產生。
