Xu, M; Ito-Kureha, T; Kang, HS; Chernev, A; Raj, T; Hoefig, KP; Hohn, C; Giesert, F; Wang, YH; Pan, WL; Zietara, N; Straub, T; Feederle, R; Daniel, C; Adler, B; König, J; Feske, S; Tsokos, GC; Wurst, W; Urlaub, H; Sattler, M; Kisielow, J; Wulczyn, FG; Lyszkiewicz, M; Heissmeyer, V. (2024) The thymocyte-specific RNA-binding protein Arpp21 provides TCR repertoire diversity by binding to the 3′-UTR and promoting Rag1 mRNA expression