al.com | Stem Cells Show Promise as Heart Failure Treatment U.S. News & World Report MONDAY, July 23 (HealthDay News) -- Scientists who used modified stem cells to rejuvenate damaged and aged heart cells from elderly heart failure patients say their research could one day lead to new treatments for the illness. "Since patients with ... Aging Heart Cells Rejuvenated by Modified Stem Cells 'NEW LIFE' FOR THE HEART Breakthrough on damaged heart cells |