Mods, can you move your abortion debate into the abortion thread, and stick to discussing stem cells in here? kthxbai Having looked into this topic a bit, there are a few things to note: -AFAIK, all successful treatments to date have been from adult stem cells. I would expect to a huge fuss in the media for a successful treatment using fetal cells, mostly because of the left-wing bias and/or the moral debate flaring up. -The biggest problem so far in using fetal cells is that although they can form *anything* in the body, they also form tumors. Until this can be resolved, there will be no treatments using fetal cells -The biggest problem so far in using adult cells is that they can't form *everything*, and they don't have *unlimited* growing potential. If I understood correctly, these cells would only replicate a few times before they wouldn't replicate anymore. Getting a tad into ethics, a reason that may have been overlooked as to why embryonic research is considered unethical by some is the fact that harvesting cells from a developing baby (in the stage that scientist do it) is about the same as cutting off someone's arm, if you put it to scale. Also, at that point in life, you can't ask permission, so you're forcefully taking.