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I posted an article on this, but this one contains great pix of cells and is easier to understand http://www.healblog.net/health-news/human-embryonic-stem-cell-trial-gets-the-green-light/ Ray Rayilyn Brown Past Director AZNPF Arizona Chapter National Parkinson Foundation ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn