Word: celle
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...breaking out of the bazaar, using know-how gained from negotiating the Middle East or simply leveraging the financial power provided by the current oil-revenue bonanza to conquer markets far from home. Whether they sell traditional carpets and inlaid furniture or deal in mega real estate developments and cell-phone services, Arabs are moving their wares across the Middle East and throughout the world. "There is no escaping it," says Egyptian Minister of Trade and Industry Rachid Mohammed Rachid, a former Unilever executive and a leading Arab voice for globalization. "We have to make the region integrate with...
Ever since Bush limited federal funding to a small number of existing stem-cell lines in August 2001, research advocates have been worried that the U.S. would lose its edge in the revolutionary field of regenerative medicine. The "presidential lines" were of limited value; there were not nearly as many as scientists initially thought would be available--more like 21 than 62, and they were old, in some cases damaged and most likely contaminated with the mouse feeder cells and calf serum used to grow them. Top U.S. scientists, many of whom depend on federal grants, decamped to labs...
...good news for all sides is that over the course of this long argument, researchers have learned more about how stem cells work, and the science has outrun the politics. Adult cells, such as those found in bone marrow, were thought to be less valuable than embryonic cells, which are "pluripotent" master cells that can turn into anything from a brain cell to a toenail. But adult cells may be more elastic than scientists thought, and could offer shortcuts to treatment that embryonic cells can't match...
Researchers have discovered that many tissues and organs contain precursor cells that act in many ways like stem cells. The skin, intestines, liver, brain and bone marrow contain these stem cell-- mimicking cells, which 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...
Cheerleaders for adult stem-cell research point to progress on everything from spinal-cord injuries to diabetes. Scientists at the University of Minnesota have used umbilical-cord-blood stem cells to improve some neurological function; in a paper published last month, Dr. Carlos Lima in Portugal wrote about restoring some motor function and sensation in a few paralyzed patients. At a recent conference of researchers from around the world, a team from Kyoto University in Japan reported success in taking a skin cell, exposing it to four key growth factors and turning it into an embryo-like entity that produced...