Reagan painted a picture where he envisioned a Parkinson's disease patient being cured as the result of stem cell research.

CNN: Reagan calls for?increased stem cell research

President Reagan was diagnosed with Alzheimer's disease after leaving office -- an affliction that many scientists say eventually may be cured with the help of embryonic stem cell research.

CNN: Obama overturns Bush policy on stem cells

And every one of these patients had some disease that theoretically might be cured or they could help cure it with these stem cell lines.

NPR: Slate's Human Nature: S. Korean Stem Cell Advance