There was an article in this morning's Houston Chronicle about a child who had a fatal blood disease, and could only be saved by a stem cell implant (I'm paraphrasing). An embryo was grown in a culture by using the egg and sperm of her father and mother. The embryo was implanted in the mother and a piece of the embryo was used to grow a stem cell. The little girl had her transplant, and so far is doing well. The mother had a new baby boy, whom she named Adam. So you can see, embryos do not have to be "killed", to achieve stem cells. Jo Ann from Houston