Injured mammalian hearts do not regenerate but scar. This is a major medical problem, as ischemic heart disease is among the leading causes of morbidity and mortality worldwide. Essential clues for human heart repair are uncovered when zebrafish and newt are found to regenerate cardiac muscle after injury. This book presents the major advances of the last decade in the field of cardiac regeneration. These recent advances include: demonstration that zebrafish, a genetically tractable system, can regenerate heart; the identification of several new stem cell populations in the heart;...