immunoglobulin delta chain

例句：

1. 1.The immune system is responsible for fighting off infections and diseases.
   免疫系统负责抵抗感染和疾病。
2. 2.The delta chain of the immunoglobulin plays a crucial role in the immune response.
   免疫球蛋白的δ链在免疫反应中起着至关重要的作用。
3. 3.In the study, researchers found that the delta chain of the immunoglobulin was involved in the process of cell-cell communication.
   研究中，研究人员发现免疫球蛋白的δ链参与了细胞间的通讯过程。