An embarrassment of riches: RORγt+ antigen-presenting cells in peripheral tolerance.

ABSTRACT

RORγt+ regulatory T (Treg) cells are critical toward maintaining gut immune tolerance. In recent studies published in Nature, Kedmi et al., Lyu et al., and Akagbosu et al. describe MHCII+RORγt+ antigen-presenting cells that mediate RORγt+ Treg cell differentiation but propose disparate identities for these cells.