Methacrylate-embedded E14 embryo (anterior coronal)
Figure 23 slices the forebrain in front of the lateral ventricular lumen where the olfactory and vomeronasal nerves are approaching the ventromedial brain surface. The presumptive olfactory NEP lies in the bottom half of the brain and has a thick layer of radially migrating cells—possibly some AOB output neurons. The dorsal part of the olfactory epithelium is continuous with a ventromedial evagination containing the lumen and surrounding sensory epithelium of Jacobsen’s organ. Bundles of vomeronasal nerve fibers are embedded in the edges of the sensory epithelium.