The human heart is a muscle, and like all types of muscles, it can be injured. In humans, heart muscle is not able to regenerate after injury, and this can lead to heart disease which develops over time, eventually leading to an untimely death. A team of researchers, Doctor Claudine Bruck (Prolifagen), Professor Edward Morrisey (Department of Medicine and Cell and Developmental Biology) and Professor Jason Burdick (Department of Bioengineering) at the University of Pennsylvania, have collaborated to develop a novel therapy to regenerate damaged heart muscle.