Advances in Stem Cell Research

NPR has a good audio piece about potential adult stem cells from an interesting source...

Now, scientists in New York say they may have found cells that are just as promising [as embryonic stem cells], but do not start with an embryo.

A few years ago, scientists in Japan said they had found stem cells with remarkable properties in the testes of adult mice. Not only could the stem cells turn into sperm, but they could, under the right conditions, be turned into any cell you like — skin, muscle, brain, you name it.

Related:
Cells that make sperm make stem cells, too: study