Recent studies shed light on new populations and potential roles of Aire and RORγt antigen-presenting cells-including unique subsets with surprising properties-in immune homeostasis and host-microbe interactions. Recent studies shed light on new populations and potential roles of Aire and RORγt antigen-presenting cells-including unique subsets with surprising properties-in immune homeostasis and host-microbe interactions. Gardner JM, Liston A Science immunology 7 78 36525506 0 Immunology 23 Dec 2022