R1 in CPu represents the severity of PD.
(a) ROIs were defined by brain atlas alignments to MRI images. The identifying number in each image indicates the A-P distance from bregma; slice positions are illustrated above the images. Scale bar, 1 mm. (b–g) Comparisons of R1 values in dCPu (b) vCPu (c) NAc (d) Ctx (e) PF (f) and HIP (g) and normalized optical density for TH in CPu (n = 6 mice). Numbers in the color-coordinated bar just above each plot indicate the A-P coordinate.