1. From the Stem Cell Biology Program (M.K., M.W., J.R., M.Z.R.), the Institute of Molecular Cardiology (B.D., G.H., Y.G., R.B.), and the Institute of Cellular Therapeutics (F.R., S.T.I.), University of Louisville, Louisville, Ken; and the European Stem Cell Therapeutic Excellence Center (M.M.), Cracow, Poland.