Word: stemming
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Dates: during 2000-2009
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...create a new embryo, biologists implant the nucleus of an adult-donor cell into an egg-cell membrane. After extracting stem cells from the embryo, scientists may be able to grow cells and organs that are genetically identical to the donor's. Those could be implanted in the donor without fear of rejection...
...President Bush hoped that his decision last week to permit limited federal funding of embryonic stem-cell research would quiet the ferocious debate surrounding the issue, it was a hope that was quickly dashed. Since his announcement, advocates on both sides have continued to find plenty to argue about--whether there are really 60 existing cell lines on which the President would allow research; whether those lines would be sufficient to yield real results; whether the restrictive rules will simply drive U.S. stem-cell researchers to other countries where they can do their work with less government interference...
...nearly everyone agrees on one thing: stem cells, the unspecialized cells the body uses as raw material for tissues and organs, have the potential to treat an astonishing range of ills, including Parkinson's disease, diabetes, Alzheimer's and spinal-cord injuries. After Bush's decision, the question becomes whether they'll ever get a fair chance...
...most people, the idea of researchers dipping freely into an eternally regenerating, federally bankrolled pool of 60 stem-cell lines sounds pretty good, and that's just the way the President wanted it. "Research on these 60 lines could...lead to breakthrough therapies," Bush said. Maybe--provided scientists can get hold of them...
...other areas of research, however, the door hasn't been closed to latecomers the way it has with stem cells, and that has the scientific community worried. In order to maximize the medical payoff from stem-cell research, researchers prefer to work with the most robust population of cell lines possible. No one knows, after all, if some lines are more viable than others and if some lend themselves to many uses while others to only a few. If too many of the lines dead-end or die off, research could stagnate. "Some stem-cell uses," says Krause, "will require...