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. 2020 May 12;14:463. doi: 10.3389/fnins.2020.00463

FIGURE 3.

FIGURE 3

Confocal immunofluorescence imaging of representative hippocampal dentate gyrus and striatum adjacent to the virus injection site. Native fluorescence from the repeat stimulation experiment is shown in the three stimulation groups: (A) Control (no stimulation) (B) Theta stimulation (C) Gamma frequency stimulation. The green GFP channel (green) serves as a reporter for transduced hippocampal neurons, whereas the Td Tomato channel (red) shows the transduced cells with concomitant c-Fos expression.