Atlas of Ultrastructural Neurocytology
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1.4.1. Dendritic Spines

Fig. 1.4.1.7. The head of a mushroom-shaped dendritic spine (S) with a spinule (arrow) protruding into the presynaptic axon terminal. Postsynaptic densities of perforated type of synapse marked by asterisks. Scale = 250 nm. (Rat, hippocampus.)

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