immune competent cell

例句：

1. 1. The immune system is the body's first line of defense against infections.
   免疫系统是身体对抗感染的第一道防线。
2. 2.The immune competent cell is responsible for identifying and destroying foreign invaders.
   免疫有效细胞负责识别并消灭外来入侵者。
3. 3.The immune competent cells are located in various parts of the body, including the skin, bone marrow, and lymph nodes.
   免疫有效细胞分布在身体的各个部位，包括皮肤、骨髓和淋巴结。