Fig. 1

Characterization of human endothelial cells EA.hy 926. Immunocytochemical staining (A + B) and in-vitro-angiogenesis assay (C + D). Cells showed a strong expression of CD-31 (A) and vWF (B). After being seeded on extracellular matrix solution (C) they formed a fine network of tubules within 18 h (D). Scale bar represents 100 μm