Comparative genome analysis delimits a chromosomal domain and identifies key regulatory elements in the alpha globin cluster. by Flint, J, Tufarelli, C, Peden, J, Clark, K, Daniels, R, Hardison, R, Miller, W, Philipsen, S, Tan-Un, K, McMorrow, T, Frampton, J, Alter, B, Frischauf, A, Higgs, D