Fig. 2. Angioblasts migrate directly on top of the endodermal layer. Transverse sections of Tg(her5:EGFP)^ne2067 embryo (A-C) and Tg(flk1:EGFP)^s843; Tg(her5:EGFP)^ne2067 embryo (D-I) visualized for GFP (green) (A,D,G), ß-catenin (red) (B,E,H) and fibronectin (blue) (C,F,I). The sections shown are at the level of the 6th somite. White arrowheads mark migrating angioblasts localized right on top of the endodermal layer (outlined by a broken white line). ß-Catenin staining outlines the endodermal layer. NT, neural tube; NC, notochord.