Word: clinics
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...Barbee, a professor at Louisiana State University Health Sciences Center and director of the Anxiety and Mood Disorders Clinic, sums up the situation with a quote he saw in a local magazine recently: "There's no 'post-' to the post-traumatic stress syndrome in this situation," he says. The stress, in other words, never goes away. "The event is still unfolding. People are losing jobs. They're moving because they're so discouraged by the situation. There's a lot of uncertainty about the future. It's not easy to live here...
...have been derived from adult stem cells from bone marrow and umbilical cords; supporters retort that adult stem cells are still of limited use, and to fully realize their potential we would need to know more about how they operate--which we can learn only from studying leftover fertility-clinic embryos that would otherwise be thrown away...
...wake of Bush's original order, Harvard decided to use private funding to develop about 100 new cell lines from fertility-clinic embryos, which it shares with researchers around the world. Scientists, desperate for variety, snap them up. "Not all embryonic-stem-cell lines are created equal," says Dr. Arnold Kriegstein, who runs the Institute for Regeneration Medicine at the University of California, San Francisco. "Some are more readily driven down a certain lineage, such as heart cells, while others more easily become nerve. We don't understand how it happens, but it does mean we need diversity...
...therapeutic cloning. In this process, a cell from a patient with diabetes, for instance, is inserted into an unfertilized egg whose nucleus has been removed; then it is prodded into growing in a petri dish for a few days until its stem cells can be harvested. Unlike fertility-clinic embryos, these cells would match the patient's DNA, so the body would be less likely to reject a transplant derived from them. Even more exciting for researchers, however, is that this technique can yield embryos that serve as the perfect disease in a dish, revealing how a disease unfolds from...
...they are useful More than 400,000 embryos created during in vitro fertilization lie frozen in clinic tanks in the U.S. Many of them will be discarded, so the embryonic stem cells that exist inside them could be salvaged...