Fig. 1.6.42. 3D reconstruction of a volume of hippocampal cortex  (stratum radiatum 6 x 6 x 5 µm - left) and cerebellar cortex (molecular  layer 2 x 2 x 2 µm - right). A density of synapses (red) is about three  times higher in the cerebellar cortex (mouse) than in the hippocampal one  (rat). Edges of scale cubes = 1 µm - left, 0.2 µm - right.