Figure 1.

Position of regions of interest used for immuno-electron microscopy. a, Caudal view of rat brain, right hemisphere, without cerebellum, made by using the Waxholm Space Atlas (Kjonigsen et al., 2015; Papp et al., 2014). Red line signifies cutting plane, showing region from which parasagittal sections used in the study were taken. a, Example of parasagittal section of the caudal part of rat brain. Left: Waxholm Space Atlas representation showing subdivisions. Middle: Waxholm Space Atlas representation superimposed onto PV⁺ immunolabeled section used in study. Right: A corresponding PV⁺ immunolabeled vibratome section. Black lines delineate MEC LII. Red boxes show the dorsal and ventral positions from which the tissue was processed for further analysis. Scale bars: 1 mm.