Adult stem cell study flawed, panel says

[deadparrot]

MINNEAPOLIS - A scientific panel says a 2002 study that suggested adult stem cells might be as useful as embryonic ones was flawed and its conclusions may be wrong, a finding that raises questions about the promise of a less controversial source for stem cells.

The research by Catherine Verfaillie at the University of Minnesota concluded that adult stem cells taken from the bone marrow of mice could grow into an array of biological tissues, including brain, heart, lung and liver.

So far only embryonic stem cells, which are commonly retrieved by destroying embryos at an early stage of development, are known to hold such regenerative promise. Many scientists believe they might one day be used to treat certain diseases and other conditions.

Opponents of stem cell research seized on the 2002 findings as evidence that stem cell science could move forward without destroying embryos. But Verfaillie has acknowledged flaws in parts of the study after inquiries from the British magazine New Scientist, which first publicized the questions last week.

http://news.yahoo.com/s/ap/stem_cells