Autoantigen-specific interactions with CD4+ thymocytes control mature medullary thymic epithelial cell cellularity. - Irla, M; Hugues, S; Gill, J; Nitta, T; Hikosaka, Y; Williams, I; Hubert, F; Scott, H; Takahama, Y; Holländer, G; Reith, W (Immunity, 2008)