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Photomicrographs of 20-μm sections to the anterior hippocampus of 96 h vehicle-withdrawn (A and C) or diazepam-withdrawn (B and D) rats. Staining as in Fig. 7. Note the increased expression of immunogold-labeled GluR1 receptor subunits (black particles) in all layers of the CA1 region of the hippocampus in the diazepam-withdrawn rat. C and D are higher magnifications of the boxed areas in A and B, respectively. [Scale bar, 500 μm (Upper) and 20 μm (Lower).]
