To verify that the AML produced by the QN thymocyes from #4369 were not caused by contaminating Mac1+/Gr1+ AML cells, we transplanted QN thymocytes (100 cells/mouse) from a one-month old NP23-NHD13 mouse with no signs of AML (Fig. 5a). Here, ITGAM is linked to acute myeloid leukemia.