Going From One Cell Type to Another

This Going From One Cell Type to Another Without Using Stem Cells | Wired Science from Wired.com may have important consequences for debates about embryos and stem cells etc: "Melton's team avoided stem cells, and their baggage, altogether by using a virus to tweak three developmental genes in pancreatic tissue cells in mice. Three days later, these became insulin-producing beta cells, and appear free from the complications that have frustrated stem cell researchers."