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寻找出有效的防范对策，对顺利开展植物基因工程育种是非常必要的。
Somatic alterations within the oncogenome underlie the genesis and progression of most human tumors, by causing oncogene activation or tumor suppressor gene inactivation. 摘要大部分人类肿瘤是由基因组中的体细胞性改变所导致的癌基因激活或抑癌基因失活所引发的。
