systemic genes

• 系统基因

systemic genes的用法和样例：

例句

1. The scars of these ancient infections are also visible in the host immune system genes that constantly adapt to fight the ever evolving retroviruses.
   而宿主的免疫系统基因上也有久远前感染而留下的痕迹，这些基因为了对抗那持续演变的反转录病毒，经常得进行修改。