正常与Parkinson病中脑神经元及色素比较(显微镜)

在左边黑质处是正常数目的神经元，并且出现色素沉着。右边是因患Parkinson病导致神经元的减少和色素沉着的减少。

At the left, normal numbers of neurons in the subtantia nigra are pigmented. At the right, there is loss of neurons and loss of pigmentation with Parkinson's disease.