A RING-type ubiquitin ligase family member required to repress follicular helper T cells and autoimmunity. by Vinuesa, C, Cook, M, Angelucci, C, Athanasopoulos, V, Rui, L, Hill, K, Yu, D, Domaschenz, H, Whittle, B, Lambe, T, Roberts, I, Copley, R, Bell, J, Cornall, R, Goodnow, C