Interestingly, the level of IFN-γ, IL-1α, IL-1β, MCP-1, and TNF-α in the CSF of PD + MenSCs group is even lower than that of sham group (Fig. 5A–C, E–F, *p < 0.01, **p < 0.01). This evidence concerns the gene IFNG and Parkinson disease.