[1] RIKEN, Lab Chromatin Dynam, Ctr Dev Biol, Kobe, Hyogo 6500047, Japan
[2] RIKEN, Prote Support Unit, Ctr Dev Biol, Kobe, Hyogo 6500047, Japan
[3] Univ Cincinnati, Div Expt Hematol & Canc Biol, Cincinnati Childrens Res Fdn, Dept Pediat,Coll Med, Cincinnati, OH 45229 USA