Stem cells restore hearing and vision in animals

Researchers said Tuesday they believe this is a first step toward helping people using stem cells. Stem cells collected from tiny embryos were used to restore lost hearing and vision in animals.

One team repaired hearing in guinea pigs using human bone marrow stem cells, and second team recovered eyes functions in tadpoles using frog cells.

The researchers said their findings help describe some of the most basic biological processes underlying the development of hearing and sight. This may help in the development of the new field of regenerative medicine. While there are no immediate uses for humans, the research continues.