Approved Stem Cells' Potential Questioned
By Rick Weiss
Washington Post Staff Writer
Friday, October 29, 2004; Page A03
All of the human embryonic stem cells available to federally funded scientists under President Bush's three-year-old research policy share a previously unrecognized trait that fosters rejection by the immune systems, diminishing their potential as medical treatments, new research indicates.
A second study has concluded that at least a quarter of the Bush-approved cell colonies are so difficult to keep alive they have little potential even as research tools.
The two studies -- the second still incomplete and the first one provisionally accepted for publication in a top-tier scientific journal but not yet published -- add new elements to the escalating debate over U.S. stem cell policy.
Embryonic stem cell research has become an unexpected wedge issue in the neck-and-neck race for the White House, with Bush insisting that it would be immoral to expand the research to include new cell colonies and Democratic challenger John F. Kerry promising to loosen the restrictions that today limit federal funding to 22 of the more than 150 known cell colonies....
http://www.washingtonpost.com/wp-dyn/articles/A7420-2004Oct28.html