1. From the Center for Regenerative Medicine (D.C., A.P.B., S.R., N.B., F.D., R.F., B.T., S.M., L.M., N.F., M.P., C.A.B.), University of Udine, Italy; National Biotechnology Laboratory (R.V., S.P., E.K., C.S.), Padriciano, Trieste, Italy; and Departments of Anesthesia and Medicine (A.L., P.A.), Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Mass.