hippocampus stratum lucidum
Layer of hippocampus area CA3 lying superficial to the pyramidal cell layer that contains mossy fiber axons projecting from the dentate gyrus. A slight thickening in this layer marks the border in some species between areas CA2 and CA3. dapted from Paxinos, G. The rat central nervous system, 2nd ed, Academic Press, San Diego, 1995, pg. 460).