1. The interspecific genetic distances are much greater than the intraspecific distances except that between P. albina and P. nigra. 除白珠母贝和黑珠母贝之间的遗传距离较小外，其余种类之间的遗传距离远远大于种内遗传距离。
2. The interspecific genetic distances are much greater than the intraspecific distances except that between P. albina and P. nigra. 除白珠母贝和黑珠母贝之间的遗传距离较小外，其余种类之间的遗传距离远远大于种内遗传距离。
3. It is believed to be jump-started by a loss of neurons in a midbrain region called the substantia nigra. 相信这是可以跳开始，由一个亏损的神经元在中脑区称为黑质。
4. In one study, glutathione levels were reduced by 40% in the substantia nigra in early stage Parkinson's disease (7). （研究7）发现早期帕金森氏症病患的脑部黑质层内谷胱甘肽水平降低了40%。
5. Results In comparison with healthy group, SERT decreased in dorsal raphe nucleus, substantia nigra and striatum in PD brains. 结果与健康组比，PD人脑标本中缝背核、黑质以及纹状体的SERT标记信号呈不同程度降低。
