Figure 1F. Copyright: Reprinted with permission from Elsevier from [doi:10.1016/S0925-4773(00)00530-X] Mech Dev 100: 205-15, Watt AJ; Jones EA; Ure JM; Peddie D; Wilson DI; Forrester LM, A gene trap integration provides an early in situ marker for hepatic specification of the foregut endoderm. Copyright 2001.