From BBC Health - December 13, 2005 00:50
US scientists move a step closer to developing a brain implant therapy for Parkinson's disease symptoms.

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US scientists have moved a step closer to developing a brain implant therapy for Parkinson's disease symptoms.
The most common drug treatment for the brain condition is levodopa, but the pills can leave people susceptible to involuntary movements such as twitches.
The Alabama University team found in tests on six patients, eye cells which produce levodopa can be implanted safely and without the side effects.
The study was published in the Archives of Neurology journal.
But the team and UK experts said large-scale studies were now needed.