human leukocyte histocompatibility antigen

例句：

1. 1. The studyof this antigen is crucial for understanding the immune system.
   研究这种抗原对于理解免疫系统至关重要。
2. 2.He was diagnosed with a rare form of cancer that requires the human leukocyte histocompatibility antigen test.
   他被诊断出患有一种罕见的癌症，需要进行人类白细胞抗原测试。
3. 3. The research team focused on identifying the human leukocyte histocompatibility antigens in different tissues.
   研究团队专注于识别不同组织中的人类白细胞抗原。