The flow cytometry analysis showed that BM cells of AE9a/MLL-AF9Uhrf1Δ/Δ mice contained far fewer GFP+c-Kit+ leukemia blast cells and more GFP‒Mac-1+ (i.e., normal) cells compared with AE9a/MLL-AF9Uhrf1fl/fl mice (Fig. 2g‒i). Here, KMT2A is linked to leukemia.