SOCS3 within donor T cells attenuates GVHD after allogeneic BMT. Survival by Kaplan-Meier analysis. Irradiated B6D2F1 mice received a transplant with BM and T cells from WT or SOCS3^−/Δvav mice (WT, n = 16; SOCS3^−/Δvav, n = 16), WT BM and SOCS3^−/Δvav T cells (n = 12), or T cell–depleted SOCS3^−/Δvav BM (n = 10) as described in “Hematopoietic stem cell transplantation.” Data were pooled from 3 similar experiments. *P = .045, WT versus SOCS3^−/Δvav BM and T cells.