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Last night, Professor Ian Wilmut of the Roslin Institute, where the world's first cloned animal, Dolly the sheep, was created, welcomed the discovery: "This is very interesting work, but we should not get too carried away. We need to confirm that they really do have as long a life-span as embryo stem cells and just how many different cell types they can form. "But if they do prove to be equally powerful, they will be a very convenient source." ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn