"Stem cell therapy may still be some way off.
Or will it take the path of the less controversial stem cell therapy?
She added: "Stem cell therapy is still very experimental, and is not suitable for everyone.
Other conditions for which stem cell therapy is being developed include deafness, diabetes, infertility, HIV/Aids and baldness.
Bone marrow transplantation is the big success story on which much of the hope for stem cell therapy is based.
Some companies are trying to make a business of technology that can be used in stem cell therapy.
His second son Fraser has cystic fibrosis - one of the conditions that could ultimately be cured by stem cell therapy.
Regeneration and stem cell therapy are promising aspects of regenerative medicine but both are still at the research stage.
Dr. Keating believes that the expense of stem cell therapy, should it work, is a major consideration.
Such stem cell therapy might be used to rebuild hearts after a heart attack, since heart muscles do not regenerate after being killed.
A dozen infants who were born with cataracts have regained their sight after scientists used a radical new stem cell therapy to regenerate healthy lenses in their eyes.
