Your last four respondents are certainly on the right track. Stem cell research is only in its infancy, but all sorts of thoughts are arising. Keep up with the news by reading Scientific American, and Discover Magazines, and if you are privy, a few medical magazines such as JAMA. Since, as you have been told, these are undifferentiated cells, they can become any type of cell. Properly introduced, they can become heart muscle cells, artery cells, nerve cells, and when injected into arthritic joints, cartilage, we think. For sure nerve cells to repair spinal cords and brain injuries. And this is only the beginning. In the US. stem cell research has been stopped in federally funded programs by the Bush administration, but Howard Hughes Medical center is making all sorts of discoveries (It is privately funded) and China, and particularly Brazil have huge work going on. When breakthroughs occur, Americans will be going to these countries for treatments, ---- in droves. Sadly, this will be available only to the wealthy here in the United States.... as usual, the middle class and the poor will not have access to this. If Christopher Reeves had lived, in 5 or 6 years, there would have been a treatment for his condition. If it happens to you, unless you can afford treatment in Brazil or China, you will stay in a wheelchair.
dad and husband both mds.