Th17 cells, not IL-17+ γδ T cells, drive arthritic bone destruction in mice and humans. by Pöllinger, B, Junt, T, Metzler, B, Walker, U, Tyndall, A, Allard, C, Bay, S, Keller, R, Raulf, F, Di Padova, F, O'Reilly, T, Horwood, N, Patel, D, Littlewood-Evans, A