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PITTSBURGH (AP) - A University of Pittsburgh researcher has pulled out of a partnership with a South Korean stem-cell research team, citing concerns over ethical practices in obtaining donated eggs for the team's groundbreaking research.
Gerald Schatten, director of the Pittsburgh Development Center and a medical school professor, said in a statement released by the school Saturday that he is ending the 20-month collaboration with the team led by cloning pioneer Hwang Woo-Suk.
He cited reports last year in the scientific journals Science and Nature, which raised a number of ethical questions, including allegations that one of the co-authors of the team's research was among those who donated eggs.
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