| 21. | Parkinson's symptoms occur when dopamine-producing neurons in the substantia nigra of the brain begin to die.
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| 22. | The structural similarity between the substantia nigra and globus pallidus was noted by Mirto in 1896.
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| 23. | The substantia nigra is a small midbrain area that forms a component of the basal ganglia.
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| 24. | However, with this treatment, the number of substantia nigra neurons decrease so it becomes less efficient.
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| 25. | Parkinson's disease is characterized by the death of dopaminergic neurons in the substantia nigra pars compacta.
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| 26. | The same for the substantia nigra pars reticulata.
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| 27. | Parkinson's occurs when specialized cells die in a portion of the brain called the substantia nigra.
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| 28. | The substantia nigra is located in the midbrain.
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| 29. | Parkinson's disease is a neurodegenerative disease affecting the substantia nigra, a component of the basal ganglia.
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| 30. | Doctors blame a loss of cells in an area of the brain called the substantia nigra.
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