C57/Bl6-CD45.1 (WT) BM was combined with either SCLtTA × BCR::ABL1−-CD45.2 (Control; no oncogene) or SCLtTA × BCR::ABL1+-CD45.2 (CML) BM and transplanted into sublethal irradiated C57/Bl6 WT mice (Fig. 1a). Here, ABL1 is linked to chronic myelogenous leukemia, BCR-ABL1 positive.