The evaluations focused on the hippocampus. To analyse the gross morphology and neuronal cytoarchitecture of dentate gyrus (DG) and Cornus Ammonis (CA) hippocampal areas by light microscopy, H&E staining was performed as previously reported [39 (link),42 (link)]. Briefly, approximately 20 randomised sections (5 microscopic fields) per animal and time/condition were examined by a blinded operator using a Leica DM6B WF microscope (Leica Microsystems, Buccinasco, MI, Italy). The images were acquired with Leica dfc 7000 t CCD camera (Leica microsystems, Buccinasco, MI, Italy) and stored on a PC running the Leica Application Suite X (LAS X) software (Version 5.1.0).
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