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Representative images of the placement of infusions of the retrograde tracer CTb-488 into POR. A, C, Brain diagrams depicting infusion locations within POR. The AP location is noted to the right of the brain diagrams. B, D, Images of the fluorescent label indicating correct POR placement. The black arrows in A and C mark the dorsoventral boundaries of POR, and the white arrows in B and D mark the ventral boundary of POR.
