Effect of CD62L^– T cells from BCL1-primed animals on anti–third-party GVHD. T cells from BCL1-primed C57BL/6 mice were transplanted along with T cell–depleted bone marrow into lethally irradiated third-party C3H/HeJ mice. (A) Survival; P < .001, CD62L^– versus unseparated or CD62L⁺. (B) Weight curve; P < .001, CD62L^– versus other groups.