Figure 2 | Scientific Reports

Figure 2

From: Low plasma serotonin linked to higher nigral iron in Parkinson’s disease

Figure 2

The association between plasma serotonin (5-HT) concentrations and QSM values, reflecting iron content, in the substantia nigra pars compacta (SNc) (a) in PD patients and controls, and (b) within PD patients by disease stage. Unadjusted Pearson’s r and p-values are indicated. Dashed line marks lowest tertile of serotonin concentrations in PD patients. Figure was produced using the ggplot2 package80 in R (version 3.5.3)81.

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