Figure 4A. Copyright: Reprinted with permission from Elsevier from [doi:10.1016/S0925-4773(01)00655-4] Mech Dev 113: 73-7, Jaszai J; Brand M, Cloning and expression of Ventrhoid, a novel vertebrate homologue of the Drosophila EGF pathway gene rhomboid. Copyright 2002.