胸腺是初级淋巴器官，是产生和培育与细胞免疫活动有关的各种特异性T淋巴细胞的场所，在细胞免疫中起中枢作用。
Thymus is the primary lymphoid organ which can produce various specific T lymphocytes related with cell-mediated immunity activities . And thymus plays a central role in the cell-mediated immunity .
初级淋巴器官