A naive T cell can be activated or primed to allow it to turn into a mature T cell by any of the antigen presenting cells, but most often it's done by a dendritic cell.

一个初始T细胞可以被激活或活化，让它能转变为一个成熟T细胞；这可以通过任意抗原呈递细胞来实现，但通常是通过树突状细胞完成的。

Around this point in the infection, immature dendritic cells digest the pathogens and move from the lung tissue over to a nearby lymph node where they present the processed antigen on an MHC II protein to a naive T cell.

在感染进行到这一阶段时，未成熟的树突状细胞会消化病原体，然后从肺组织迁移到临近的淋巴结；在这里它们处理抗原至MHC II类分子，并呈递给初始T细胞。