- VEGF-A induced hyperpermeability of blood-retinal barrier endothelium in vivo is predominantly associated with pinocytotic vesicular transport and not with formation of fenestrations. Vascular endothelial growth factor-A. Hofman, P., Blaauwgeers, H.G., Tolentino, M.J., Adamis, A.P., Nunes Cardozo, B.J., Vrensen, G.F., Schlingemann, R.O. Curr. Eye Res. (2000)