Atkinson SP, Koch CM, Clelland GK, Willcox S, Fowler JC, Stewart R, Lako M, Dunham I, Armstrong L. Epigenetic marking prepares the human HOXA cluster for activation during differentiation of pluripotent cells. Stem Cells. 2008 May;26(5):1174–85. doi: 10.1634/stemcells.2007-0497. PMID: 18292213.