Here is some background information about stem cells. Scientists believe that stem cell research can be used to treat medical conditions including Parkinson’s disease, spinal cord injury, stroke, ...

- Stem cells can be manipulated, under certain conditions, to become mature cells with special functions, such as the beating cells of the heart muscle or insulin-producing cells of the pancreas.

This summer marks the third anniversary of President Bush's announcement of his policy on stem cell research. In the intervening years, the subject has become a polarizing flash point for American ...