Has this been done using adult stem cells.
I know it has been done outside the US. I'm not sure that US law allows for use of adult stem cells for medical treatment. I'd like to see it done, so that folks can more easily compare the results of each of the treatments. If people see that adult stem cells are just as useful, or even more so, than embryonic stem cells, they may be convinced that killing embryos for their stem cells is unnecessary.