FIGURE 1.

ChR2 expression in PV+ cells 4 weeks post-infection. (A) YFP fluorescence in a medial PFC coronal section from an infected mouse (medial/pial surface is to the right, dorsal toward the top of the page). (B) YFP labeled cells double-stained for parvalbumin (PV). YFP labeling in green on the left, PV immunoreactivity shown in red in the middle, overlay of YFP and PV labeling on the right. Yellow suggests colabelling of PV+ cells with YFP, demonstrating ChR2 expression in cells which are immunoreactive for PV.