FIG. 5.

The extent of anterograde transneuronal infection of the striatum approximately 48 h after injection of 100 (C and D) or 200 nl (A and B) of PRV Becker into the PFC. The areas of the striatum indicated by the arrows in panels A and C are shown at higher magnification in panels B and D, respectively. Note that the extent of anterograde transneuronal infection of the striatum was dramatically increased by injection of the higher concentration of virus. Bars: A and C, 550 μm; B and D, 20 μm.