natural killer lymphocyte

例句：

1. 1. Natural killer cells play a crucial role in the immune system.
   自然杀伤性淋巴细胞在免疫系统中起着至关重要的作用。
2. 2. The study found that natural killer cells can recognize and destroy cancer cells.
   研究发现，自然杀伤性淋巴细胞能够识别并摧毁癌细胞。
3. 3. The researchers discovered that natural killer cells could be used to target and eliminate certain types of cancer cells.
   研究人员发现，自然杀伤性淋巴细胞可以被用来针对并消除某些类型的癌细胞。