Fig. 3
![Fig. 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40035-018-0128-6/MediaObjects/40035_2018_128_Fig3_HTML.png)
Representative retrograde labeling in brain regions following RV infection in the OB. Signals from RV were detected in α-syn-positive fields including the OB, the AON, the Piri, and the CPU 3 weeks after the AAV injection. No projections from the SN were found