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(A) MPO concentration (pg/mL) and (B) MPO activity (mU/mL) in the CSF in male patients and female ones at early-stage disease (Hoehn and Yahr stages 1 and 2) and patients with moderate-advanced disease (Hoehn and Yahr stages 2.5–4). No significant differences were found. Mean ± standard deviation. Abbrev.: CSF, cerebrospinal fluid; MPO, myeloperoxidase; PD, Parkinson´s disease.
