From EurekAlert, a good example of investigative work by scientists seeking to understand the basis of healing and regeneration. Researcher Steven Houser "is sold on the idea that the heart - like the skin - contains its own stem cells: cells that are self-renewing and can be differentiated into different types of heart tissue. It's a controversial subject in cardiovascular circles, but for Houser, who spent thirty years studying the molecular biology of heart cells, the stakes are worth it when it comes to combating congestive heart failure (CHF). Although stem cells have been found in many other organs in the body, including the brain, many researchers remain unconvinced that the heart contains stem cells. Houser respectfully disagrees."