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. Author manuscript; available in PMC: 2014 Oct 20.
Published in final edited form as: JAMA Neurol. 2013 May;70(5):571–579. doi: 10.1001/jamaneurol.2013.172

Figure 3. Clustered box plot illustrating neuronal density in ventral, dorsal, and combined (total) nigral tiers in the parkin and Parkinson disease (PD) cases.

Figure 3

The asterisk indicates an extreme score (ie, the value is more than 3 box lengths from the upper quartile) and the black dot indicates an outlier (ie, the value is more than 1.5 box lengths from the lower quartile).