CX3CL1 and Parkinson disease: Stereological analyses revealed that densities of CX3CL1-immunoreactive NM-laden neurons were significantly reduced in MMD-LB (634.54 ± 609.89/mm3), PD (487.80 ± 279.20/mm3), and PSP (433.51 ± 348.08/mm3) groups as compared to controls (1720.84 ± 391.84/mm3) (p < 0.0001, Figure 1I).