They again used a retrovirus to introduce four genes, this time experimenting with adult mouse liver and stomach lining cells. 他们再次使用逆转录病毒导入四种基因到成年小鼠肝脏和胃粘膜细胞内。
Through experiment results we could take a conclusion that PCNB damaged liver and kidney of mice badly and the brain and spleen were also injured at a certain extent. 此外，通过解剖观察和脏器系数的变化可知，小鼠肝脏发生了肿大，脾发生了萎缩。
