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Parkinson’s disease (PD) is an extremely diverse disorder. While no two people experience Parkinson’s the same way, there are some commonalities. Parkinson’s affects about one million people in the United States and ten million worldwide. The main finding in brains of people with PD is loss of dopaminergic neurons in the area of the brain known as the substantia nigra An area of the brain, part of the basal ganglia, where cells produce dopamine..

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