ABCB1 and chronic myelogenous leukemia, BCR-ABL1 positive: Among the identified proteins, galectin-1 (Gal-1), which exerts effects on cell apoptosis, proliferation and differentiation, increased 4.85 folds in K562/ADM cells compared with the revertant K562/ADM cells, and up-regulated 22.3 folds compared with K562 cells, implying that galectin-1 may contribute to augment of MDR1 expression and drug resistance in CML.