Multiply restimulated human thymic regulatory T cells express distinct signature regulatory T-cell transcription factors without evidence of exhaustion. - Hippen KL; Furlan SN; Roychoudhuri R; Wang E; Zhang Y; Osborn MJ; Merkel SC; Hani S; MacMillan ML; Cichocki F; Miller JS; Wagner JE; et al. (Cytotherapy, 2021)