Fig. 1.6.52. In the rat hippocampus, mitochondrion (brown, arrows) is present approximately in one half of presynaptic axonal boutons (green) at mushroom-type dendritic spines (A, B). It can be located close (A) or rather distant (B) from the synapse (red). Only around one-fifth of presynaptic boutons at thin-type spines include mitochondrion (C). 3D reconstructions. Download the high resolution image (C). Scale cube = 0.2 µm per side. (Rat, hippocampus.)
