Fig. 1.6.46. Selection of several consecutive serial sections through perforated axo-spinous synapse (left) and a 3D reconstruction of this region. Nascent zone (vesicle-free, punctum adhaerens-like) part of the synapse is marked by arrows in the series and colored in magenta in the reconstruction. The active synaptic zone accompanied by synaptic vesicles is colored in red. (Hippocampus, rat.)