The images show confocal micrographs of the substantia nigra from animals that received intranifral infusions of VSV (A-F) or MV (G-L) pseudotyped lentiviral vectors 21 days previously. Sections were labeled by indirect immunofluorescence in order to detect GFP (green; A, D, G, J) and tyrosine hydroxylase (red; B, E, H, K). Low magnification images (A-C, G-I; bar = 50 μm) illustrate the relative topographical distributions of transduced neurons and dopaminergic neurons. High magnification images (D-F, J-L bar = 20 μm) demonstrate examples of vector-transduced dopamine neurons, identified by co-expression of GFP and TH (arrowheads).