Fig. 1: Serum myeloperoxidase concentration and activity in patients with idiopathic Parkinson’s disease and controls.
From: Association between serum myeloperoxidase enzyme activity and Parkinson’s disease status

Serum MPO concentration (a) and activity (b) were significantly higher in patients than in controls (P < 0.0001). Individual values and mean + SD. MPO myeloperoxidase, PD Parkinson’s disease.