Fig. 9.
Distribution of the GABAA receptor (A) subunit mRNAs and (B) immunoreactivities (α1–α5, β1–β3, γ2 and δ) in the ventral hippocampus, ventral subiculum (VS), parasubiculum (PaS) and presubiculum (PrS) and entorhinal cortex (Ent). Note the strong labeling of the α3-subunit mRNA and protein in VS, PaS and PrS, in contrast to the weak labeling in CA1 and missing labeling in the dentate gyrus. The α5-unit is strongly expressed in CA1–CA3, but faint in VS, PaS and PrS. Note the exclusive expression of the δ-subunit in the dentate gyrus (horizontal sections of the mouse brain approximately Bregma −3.28 mm, according to Franklin and Paxinos, 2007). Scale bar = 300 μm.