FIG 3. Allocortex of the hippocampal formation.

A and B, MRM images of adjacent sections through the midhippocampal formation in the coronal plane.

C, Nissl stain specimen corresponding to A. From lateral to medial, the MRM displays: 1, alveus; 2, stratum oriens; 3, stratum pyramidale; 4, stratum radiatum; 5, stratum lacunosum; 6, stratum moleculare; 7, hippocampal sulcus; 8, stratum moleculare; 9, the dentate granule cell layer (straight arrow in A, B, and C); and 10, the polymorphic layer (arrowhead in B and C). Also seen are the caudate nucleus (CN), subiculum (Sub), and the lamellar retinotopic organization of the lateral geniculate body (curved arrow) (magnification x6.25).