GFP+ (BCR-ABL1+ or BCR-ABL1T315I+) Gr-1+ (Fig. 1j) and in particular GFP+ CD11bmedium+ (Figs. 1k and S1F) myeloid cells, which likely represent the blasts (Fig. 1l), were higher in mice with BCR-ABL1T315I+ than BCR-ABL1+ CML. This evidence concerns the gene BCR and chronic myelogenous leukemia, BCR-ABL1 positive.