Fig. 2.1.25. Graphic reconstruction (i.e. manually shaded serial contour tracings) of flat, stacked, cup-shaped and lamelliform astrocyte processes forming a glial capsule ensheathing the synaptic glomerule in thalamus. D - dendritic trunk, s - spine, T - axon terminal, asterisks - glial sheath. Note tubules of smooth endoplasmic reticulum in widened rims of glial lamellae. (Rat, thalamic ventrobasal nucleus.) Download the high resolution image.