中文摘要：

为保持免疫和耐受，机体的免疫器官和组织能通过在两者之间迁移并定位的淋巴细胞而建立相互联系。淋巴细胞在体内广泛分布，除中枢神经系统、角膜和眼前房等血流达不到的组织外，都有淋巴细胞存在。研究淋巴细胞在各种淋巴组织中的定位分布，对评价机体组织的免疫状态具有重要意义，同时对疾病诊断具有重要参考价值。作者系统地论述了淋巴细胞在各种免疫器官中的定位分布，为制定新的防制战略以控制疾病的发生提供重要依据。

英文摘要：

For maintenance of immunity and tolerance, organs and tissues of the organism are connected by migrated and positioned lymphocytes. Lymphocytes extensively distribute in vivo, almost in all tissues, except which blood can＇t reach, for example, central nervous system （CNS）, cornea, anterior chamber of eye, and so on. Understanding lymphocyte distribution is essential for evaluating the immune state of organism, meanwhile has an important reference value for diseases diagnosis. This paper systematically discusses lymphocyte distribution in various of immune organs and tissues, and it will supply impor- tant foundations for preventing and controlling diseases.