
Fig. 1.
Tyrosine hydroxylase immunoreactivity in the substantia nigra of sham-treated (left) and 6-OHDA-treated (right) rats. Photomicrographs show the absence of dopaminergic neurons on the lesion side in rats treated with 6-OHDA. Dopaminergic neurons are preserved in the ventral tegmental area (VTA). Scale bar, 200 μm.




