In nude mice - animals with an inhibited immune system - engrafted with human colon cancer, the researchers first injected the engineered mesenchymal stem cells, then 5-FC.

• 在移植有人类结肠癌的裸鼠（没有免疫功能）中，研究人员首先注射遗传工程得到的间充质干细胞，然后注射5-FC。