Fig. 7. Grafts of veins. (A,B) Coelomic grafts, (C) dorsal graft. (A) Double-staining with QH1 (brown) and NRP1 (blue) of an E4 chick host that had received a graft of an E5 jugular vein 2 days before. The graft is not visible on this section. Quail EC migrated into the subclavian and brachial artery (ba, arrows), as well as into the umbilical vein (arrowheads). (B) Graft of an E11 jugular vein. QH1-positive EC are found in the umbilical vein (arrowhead). (C) Dorsal graft of an E14 jugular vein. Quail EC have colonized the posterior cardinal vein (arrowhead), which was displaced medially in this graft together with the Wolffian duct (asterisk). G, graft. Bars, (A) 125 µm, (B,C) 90 µm.
