Conventional wisdom holds that, with the exception of skin and blood cells, most tissues in the body do not normally regenerate. But recent research has uncovered some surprising biological mechanisms that indicate that the body does in fact have the potential to repair some other vital tissues. Hoping to exploit this work, a Harvard University and University of Utah startup, Hydra BioSciences, is seeking to develop drugs that it says will repair damage from heart attacks.

Select from the choices above to read the entire article.