In addition, IL-2 signal affected the function of Treg cells and maintained their competitive fitness.

同时，IL - 2信号影响着调节性T细胞的功能并维持其竞争适应性。

More and more research proved that CD4+CD25+ regulatory T cells (Treg cells) play an important role in immune tolerance in these years.

近年来，越来越多的研究表明CD4+CD25+调节性T细胞在免疫耐受的过程中起着非常重要的作用。