The<unk><unk>  of the<unk>  is a layer of the<unk>  between the<unk>  pyramidale and the<unk>  radiatum. It is the tract of the mossy fiber projections, both inhibitory and excitatory from the granule cells of the dentate gyrus. One mossy fiber may make up to 37 connections to a single pyramidal cell, and innervate around 12 pyramidal cells on top of that. Any given pyramidal cell in the<unk><unk>  may get input from as many as 50 granule cells.
Stratum lucidum of hippocampus
Fusiform body area
Subventricular zone
Periventricular nucleus
Posterior cingulate cortex
Posterolateral sulcus of medulla oblongata
Retrosplenial cortex
Fields of Forel