Fig. 1.6.53. Wider or lamellar astrocyte processes (blue) intimately adjoin most synaptic clefts (e.g., 2, 3). Dark granules in processes are glycogen particles. Some synapses are not accompanied with astrocyte process, not only in single sections (1) but also in analyzed serial sections. The analysis of our sample found about 25% of synapses lacking juxtaposed astrocyte process. Most of them were macular, placed on a thin-type dendritic spine. (Rat, hippocampus.)