Myeloid colonies from

Mll-AF9 (▪) and wild-type mice (■).Fetal liver (E13.5) results in left upper and lower panels and bone marrow from 6-day-old mice in right upper and lower panels. ▪ represents Mll-AF9 mice; ■, wild-type mice. Upper panels: total colonies from first, second, and third generations of plating. Lower panels: colonies by type A, B, or C class. Means and standard errors are shown.