Fig. 4

A Changes in the levels of B cells at inclusion time, 1 year and 2 years after. B Changes in the levels of plasma cells in PD patients stratified by treatment. PD-0 yr (untreated Parkinson’s disease patients), PD-1 yr (patients treated for 1 year), PD-2 yr (patients treated for 2 years). (*) indicates significant differences between patient groups. P < 0.05 (*); P < 0.005 (**); P < 0.0005 (***)