Therefore, we instead injected AE9a‐transduced c‐Kit+ BMNCs from Kdm4bΔ/Δ or Ctrl mice into irradiated recipients for a serial BM transplant, which is often used for in vivo t(8;21)‐positive leukemia mouse models.21, 44, 45, 46. The gene discussed is KIT; the disease is leukemia.