TH and stroke disorder: For example, exercise post-stroke increased the number of (1) FG+ striatonigral and corticonigral projection neurons (Fig. 2B and C, right); (2) striatal and cortical neurons (NeuN+ cells, Fig. 2B and C, left); and (3) nigral DA neurons (TH+ cells) in the ipsilateral hemispheres to MCAO (Fig. 6A and B).