Figure 2.

Striatal TH expression as visualized by anti-TH immunohistochemistry: 2.5 weeks after direct injection of AdPGK⋅tet⋅hTH1 in an untreated (A and B) or a dox-treated animal (E); 2 weeks after addition of dox to the drinking water of an on-off animal (C); 1 (F) or 3 (G) weeks after dox removal in an off-on animal; and 17 weeks after viral injection in a dox untreated (D) or in an on-off-on animal (H). [Bar = 1 mm (A and C–H) and 50 μm (B).]