Effects of GNF-2 and Dasatinib on HSPCs expressing BCR/ABL-T315I. Sca1+ BM cells were retrovirally infected with BCR/ABL-T315. Infected cells were then plated in semi-solid medium in the presence of 2.5 or 5 μM GNF-2 and 0.3 or 0.6 μM Dasatinib (A) without cytokines and (B) with cytokines (mIL-3, mIL-6 and mSCF) to determine the effect of the drugs on HSPC colony formation in semi-solid medium. Colonies were counted after 10 days. The means +/- SD of triplicates from one representative experiment out of two performed are given.