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Reconstructions of medial frontal cortex lesions. Minimal (left column), representative (center column), and maximal (right column) extent of the lesions in coronal sections between +5.2 mm anterior to bregma and −1.3 mm posterior to bregma are illustrated. Gray shading indicates areas of complete cell loss, whereasstippled shading represents the lesion penumbra in which cells were still present but clearly abnormal compared with those in sham-operated animals.
