Fig. 7

Concentrations of α-synuclein a and α-synuclein-NAbs complexes b in plasma from Parkinson’s Disease (PD), Multiple System Atrophy (MSA) patients and normal controls (NC). Horizontal bars represent the mean values ±SEM. α-Synuclein-NAbs complex concentrations were quantified using α-synuclein standard curve. Significance was tested using Man–Whitney’s U test (P < 0.05)