CD4 and chronic myelogenous leukemia, BCR-ABL1 positive: To test whether leukemia cells need to be killed for their miHAs to be cross-presented we transplanted B6 mice with CD45.2+ C3H.SW BM, Kb−/−H60+ BC-CML along with C3H.SW CD4 cells, which mediate GVL in this model25.