Safety of intracoronary infusion of 20 million C-kit positive human cardiac stem cells in pigs. oleh Matthew C L Keith, Xian-Liang Tang, Yukichi Tokita, Qian-Hong Li, Shahab Ghafghazi, Joseph Moore Iv, Kyung U Hong, Brandon Elmore, Alok Amraotkar, Brian L Ganzel, Kendra J Grubb, Michael P Flaherty, Gregory Hunt, Bathri Vajravelu, Marcin Wysoczynski, Roberto Bolli