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Cloning NPR's David Baron reports scientists from the US and Japan say they've taken cells from the ear of a prize bull and used them to produce six identical calves. The experiment is a significant step in cloning research.

All Things Considered

Cloning

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Cloning

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NPR's David Baron reports scientists from the US and Japan say they've taken cells from the ear of a prize bull and used them to produce six identical calves. The experiment is a significant step in cloning research.