Word: kriegstein
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Dates: during 2006-2006
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...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...
...could become a reservoir of replacement cells for treating diseases such as leukemias, stroke and some cancers. "Brain stem-cells can make almost all cell types in the brain, and that may be all we need if we want to treat Parkinson's disease or ALS," says Dr. Arnold Kriegstein, who directs the University of California at San Francisco's Institute for Regeneration Medicine. "Embryonic stem cells might not be necessary in those cases." When it comes to treating heart disease, "if you could find a progenitor cell in the adult heart that has the ability to replicate," says Douglas...