Revisited: The Regenerative Power of Pig Guts

Bioengineers have made great strides harnessing the body's ability to start over, whether regenerating heart tissue and bones, or using stem cells to regrow fingertips. Still, much of regenerative medicine's promise remains inside the laboratory--or at least that was what I thought when I began reporting for The Body Builders: Inside the Science of the Engineered Human. Some clinicians, like Dr. Eugenio Rodriguez, aren't waiting for trials to be completed to help patients. Instead, they ar