Guo Y, Chan R, Ramsey H, Li W, Xie X, Shelley WC, Martinez-Barbera JP, Bort B, Zaret K, Yoder M, Hromas R. The homeoprotein Hex is required for hemangioblast differentiation. Blood. 2003 Oct 01;102(7):2428–35. doi: 10.1182/blood-2003-02-0634. PMID: 12791650.