Localization of cytoskeletal elements and migratory characteristics differ between cells derived from embryonic aAo versus dAo. A–C) Embryonic aAo VSMCs labeled with anti-vinculin antibody and phalloidin. D–F) Cells derived from the embryonic dAo labeled with anti-vinculin antibodies and phalloidin. DNA labeled with DAPI. G) Quantification of relative focal adhesion area. H, I) Scratch assay using embryonic aAo and dAo VSMC lines, 6 hours after scratch was applied. J) Quantification of percent wound closure in embryonic VSMC lines. K, L) Boyden chamber assay on embryonic VSMCs t=24 hours. Cells stained with Giemsa demonstrate the number of cell that invaded the membrane. M) Quantification of number of cells migrated after 24 hours. Scale bars represent 50µm. Abbreviations: Vin, vinculin; Phal, phalloidin. Error bars represent SEM. *, p≤0.05; **, p≤0.01.