1. From the Experimental Cardiovascular Medicine (R.K., F.R., J.R., C.R., P.M.) and Vascular Pathology and Regeneration (M.M., C.E.), Bristol Heart Institute, School of Clinical Sciences, University of Bristol, Bristol, United Kingdom; Biocompatibles UK Ltd, Farnham, United Kingdom (A.L., R.H.); Department of Physiology, University of Otago, New Zealand (R.K.); and BTG International Germany, Alzenau, Germany (C.W.).