A step forward in heart damage repair
A medical research team led by University of Miami doctors injected stem cells into the hearts of pigs that had been damaged by heart attacks. Within two months, the doctors said, the stem cells made the pigs’ hearts good as new. For humans, the research represents another promising step toward healing the damage from heart attacks, the No. 1 cause of death in the United States, killing more than 800,000 people a year.