Old Mice Made "Young"

Old Mice Made "Young"—May Lead to Anti-Aging Treatments

Aging mice can be made "young" again, according to findings one scientist initially found unbelievable.
The key is muscle-derived stem cells, which—like other stem cells—are unspecialized cells that can become any type of cell in the body.
When injected with muscle stem cells from young mice, older mice with a condition that causes them to age rapidly saw a threefold increase in their life spans, said study co-author Johnny Huard, a stem-cell expert at the McGowan Institute for Regenerative Medicine in Pittsburgh.
The study mice were genetically engineered to have a condition similar to a rare human syndrome called progeria, in which children age quickly and die young