Reduced replating abilities of primary Dnmt2−/−bone marrow cells in a myeloid colony formation assay. For primary (1°) colony formation, 1.25 × 104 total bone marrow cells were plated in semisolid medium allowing myeloid differentiation. For secondary (2°) colony formation, cells were harvested and 0.1% of primary colonies were replated into semisolid medium. Results are from two independent experiments analyzing 9 wild-type and 13 Dnmt2−/−mice in total. 