文摘
The role of dendritic cells (DCs) in the induction of antigen-specific tolerance mediated by extrathymic regulatory T (Treg) cells remains incompletely defined. In this issue of Immunity, Jones et al. (2016) show that BTLA+DEC205+CD8+CD11c+ DCs efficiently induce peripheral Treg cells via the engagement of HVEM, a receptor for BTLA.