(From InfoAging). Advanced Cell Technology has demonstrated that cloned stem cells can be used to repair heart damage more effectively than adult stem cells. You may recall that human trials using adult stem cell infusions have already taken place, but further trials have been blocked by the FDA. While this work by ACT is just the first in what will no doubt be a number of demonstrations using mice, it already shows great promise for future development of the technology. ACT and other research groups are doing an impressive job in overcoming technical hurdles on the way to full blown regenerative therapies based on stem cells and therapeutic cloning.