aortic lymph nodes

例句：

1. 1. The doctor removed the aortic lymph nodes to remove the cancerous tissue.
   医生切除了主动脉淋巴结以去除癌组织。
2. 2. The patient's aortic lymph nodes were enlarged due to infection.
   患者的主动脉淋巴结因感染而肿大。
3. 3. The study found that aortic lymph nodes play an important role in immune response.
   研究发现，主动脉淋巴结在免疫反应中起着重要作用。