Authors: Karim Nayernia; Jessica Nolte; Hans W Michelmann; Jae Ho Lee; Kristina Rathsack; Nadja Drusenheimer; Arvind Dev; Gerald Wulf; Ingrid E Ehrmann; David J Elliott; Vera Okpanyi; Ulrich Zechner; Thomas Haaf; Andreas Meinhardt; Wolfgang Engel Journal: Dev Cell Date: 2006-07 Impact factor: 12.270