I request for the retraction of the article entitled "The Effect of C/EBPalpha or C/EBPepsilon on 32Dcl3 Murine Myeloblasts and #1111 Acute Promyelocytic Leukemic Cells" published in the Korean Journal of Laboratory Medicine 2004 Dec;24(6):339-46.

I deeply regret to inform you that I had written this article without the permission of Professor Scott Kogan, with whom I had conducted the reported research at the University of California at San Francisco. Professor Kogan had later published essentially the same work in the article "Lee YJ, Jones LC, Timchenko NA, Perrotti D, Tenen DG, Kogan SC. CCAAT/enhancer binding proteins alpha and epsilon cooperate with all-trans retinoic acid in therapy but differ in their antileukemic activities. Blood 2006 Oct 1;108(7):2416-9. Epub 2006 Jun 20."

As the first and corresponding author, I hereby retract the paper "Lee YJ and Kogan S. The Effect of C/EBPalpha or C/EBPepsilon on 32Dcl3 Murine Myeloblasts and #1111 Acute Promyelocytic Leukemic Cells. Korean J Lab Med 2004 Dec; 24(6):339-46."