It is necessary for gene engineering breeding to reveal mechanims of foreign gene inactivation and take strategies to overcome transgene inactivation as well. 深入地了解外源基因失活的原因以及尋找出有效的防范對策，對順利開(kāi)展植物基因工程育種是非常必要的。
Somatic alterations within the oncogenome underlie the genesis and progression of most human tumors, by causing oncogene activation or tumor suppressor gene inactivation. 摘要大部分人類(lèi)腫瘤是由基因組中的體細胞性改變所導致的癌基因激活或抑癌基因失活所引發(fā)的。
