Catheter-Based Endomyocardial Delivery of Mesenchymal Precursor Cells Using 3D Echo Guidance Improves Cardiac Function in a Chronic Myocardial Injury Ovine Model oleh Yanping Cheng, Genghua Yi, Gerard B. Conditt, Alexander Sheehy, Frank D. Kolodgie, Armando Tellez, Igor Polyakov, Anguo Gu, Michael S. Aboodi, David Wallace-Bradley, Michael Schuster, Timothy Martens, Silviu Itescu, Greg L. Kaluza, Shubhayu Basu, Renu Virmani, Juan F. Granada, Warren Sherman M.D.