WSJ.com - U.S. Scientist Quits Stem-Cell Alliance

WSJ.com - U.S. Scientist Quits Stem-Cell Alliance: "U.S. Scientist Quits Stem-Cell Alliance
By a WALL STREET JOURNAL Staff Reporter
November 12, 2005; Page A5A


A prominent U.S. scientist is withdrawing from an international collaboration to create human embryonic stem cells.

Gerald Schatten, a cell biologist at the University of Pittsburgh, said he was severing all collaborations with the laboratory of Dr. Woo Suk Hwang of Seoul University.

Dr. Hwang, a veterinarian, has drawn international applause for leading the first effort to clone human embryos and extract their stem cells. Last month, he announced the formation of the World Stem Cell Foundation, an international alliance aimed at spreading that technology.

Dr. Schatten, who was to have led the organization's board of directors, says he is now severing collaboration with Dr. Hwang, due to questions over the source of human eggs used in a 2004 cloning project, and errors in a 2005 paper coauthored by the scientists.

A 2004 news report in the journal Nature said at least one female laboratory worker had provided eggs for the project, an allegation that Dr. Hwang has denied on several occasions. Under U.S. rules, collecting eggs from women working on a cloning project would be considered unethical. In the original paper, published by the journal Science last year, the scientists said the eggs all came from anonymous donors."