As expected, the TH signal in the caudate–putamen (CPu) was partially lost, and TH fibers to the nucleus accumbens (NAc) and olfactory tubercle (OT) were indistinguishable from the control side 1 month after NOTCH2NLC‐(GGC)98‐HA infection (Figure 6c,d). This evidence concerns the gene TH and infection.