"We had believed that we could create an infinite number of clones. That is why these results are so disappointing," the study's senior author Teruhiko Wakayama of the University of Yamanashi told AFP. ________________ There is a limit on how many times a mammal can be cloned before suffering "mutational meltdown", Japanese scientists have discovered, after making 1,200 clones over two decades that started off with a single mouse. The 58th generati... [3871 chars]
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