cellmediated immunity

例句：

1. 1. Cell-mediated immunity is the first line ofdefense against many types of infections.
   细胞介导的免疫是对抗许多类型感染的第一道防线。
2. 2. The study found that cell-mediated immunity plays a crucial role inthe body's ability to fight offdiseases.
   研究发现，细胞介导的免疫在身体抵抗疾病方面起着至关重要的作用。
3. 3.In some cases, the immune system maynot be able to recognize and attack cancercells because of a deficiency in cell-mediated immunity.
   在某些情况下，由于细胞介导的免疫缺陷，免疫系统可能无法识别并攻击癌细胞。