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A procedure called nuclear transfer, or therapeutic cloning, is central to research on stem cells. Because it involves the creation and destruction of embryos to study diseases and cures, ``it may offend some people,'' said Paul Berg, professor emeritus of molecular and genetic medicine at Stanford and a 1980 Nobel Prize winner.
``But its supervision will be a transparent and ethical process, and not leave itself open to the possibility of abuse,'' he said.
For science to progress, ``We need to do it. It is a moral issue not to do it,'' he said. ``Nuclear transfer is at the heart of the science.''
Berg spoke at a conference of the California Healthcare Institute held at Stanford. He was joined by Robert Klein, the Palo Alto real estate developer who conceived Proposition 71, and state Sen. Deborah Ortiz, D-Sacramento, author of a state law that protects stem-cell research in California.
Senator is watching
The landmark ballot measure won almost 60 percent...