Clue To Stem Cell Signalling
Forbes reports on what seems to be an important step forward in stem cell research - identifying the signalling molecules used by embryonic stem cells to spur growth and regeneration. As one scientist notes: "It is a little puzzling that we often get a relatively low number of cells that are incorporated in the damaged area, and yet get robust repair outcomes. In addition to replacing damaged cells, stem cells must bring something new with them." This may be the same or a similar mechanism by which adult stem cell therapies have accomplished regeneration. Many scientists in this area are hotly engaged in founding commercial ventures - and are thus not as forthcoming as they might be about the details of their work.
Link: http://www.forbes.com/lifestyle/health/feeds/hscout/2004/10/07/hscout521626.html