Parkinson's Study Finds Drawbacks
The study looked at the history of a patient afflicted with Parkinson's Disease who received a neural transplant of fetal cells 14 years ago.
Previous studies had shown that the disease did not affect the graft cells. But Dr. Thomas Freeman - a neurosurgeon at USF who co-authored the study - says markers for the disease were found in the graft itself. He says the study shows it may be necessary to repeat the implantation of stem cells about every decade.
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