The University of Minnesota is asking that an article published by one of its researchers on adult stem cells be retracted, as the university concluded that falsified data were used in the experiment.

By Dan Vergano A magazine investigation has raised new doubts about pioneering adult stem cell studies, leaving questions about the much-touted medical potential of these cells.

By Steve Connor A key study showing that adult stem cells are just as useful as those derived from early embryos has been called into question following the discovery of serious errors in the original research.

CLEVELAND, Feb. 28 /PRNewswire/ -- Athersys, Inc. has announced that it has successfully produced a clinical grade master cell bank and initial product doses intended to support its clinical trial activity in 2007 and 2008.

By JOSHUA FREED, THE ASSOCIATED PRESS 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.