Most infertility patients support using leftover embryos for stem cell research and are in favor of selling the embryos to other couples, according to a recent survey of 1,350 infertility patients at a university fertility center in Illinois. It was estimated in 2002 that nearly 400,000 embryos are in storage at U.S. clinics as a result of extra embryos being produced during procedures. As to whether couples should be allowed to sell leftover embryos (a practice deemed unethical by the by the American Society for Reproductive Medicine and the American College of Obstetricians and Gynecologists), 56% of the 588 respondents who stated a definitive opinion answered yes. [Science Daily]