Fig. 2From: Selected serum cytokines and nitric oxide as potential multi-marker biosignature panels for Parkinson disease of varying durations: a case-control studyTh1:Th2 serum cytokine ratio (IFNγ:IL-10) in PD patients of varying disease durations, and in controls. Each Th1:Th2 ratio was calculated using individual serum concentrations of IFNγ and IL-10 to obtain the mean ratio of each PD patient for statistical analyses. (Mann-Whitney U Test *P < 0.0001)Back to article page