Researchers pursue a controversial technique intended to cure diseases by transplanting custom-made cells
In many ways, 9-year-old Jacob Sontag is much like his fourth grade classmates. He loves reading, watching movies, and listening to music, and he's well liked by a large circle of friends. However, Jacob is not a typical boy. He has Canavan disease, a rare neurodegenerative disorder that has gradually depleted the myelin, or electrical insulation, in his brain and confined him to a wheelchair. Jacob and his family are looking to a controversial experimental approach to cure him someday.