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1 From the Newcastle Fertility Centre, Biosciences Institute, Newcastle University, and the Centre for Life, Newcastle upon Tyne (M.H.), and the Gurdon Institute, University of Cambridge, Cambridge (A.S.) - all in the United Kingdom.
1 From the Newcastle Fertility Centre, Biosciences Institute, Newcastle University, and the Centre for Life, Newcastle upon Tyne (M.H.), and the Gurdon Institute, University of Cambridge, Cambridge (A.S.) - all in the United Kingdom.