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. 2020 Nov 19;14:585323. doi: 10.3389/fnins.2020.585323

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Copyright © 2020 Levy, Sofer, Brumfeld, Zilkha and Kimchi.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Complex network of micro tunnels connecting the nasal cavity with the VNO and the NPD, which opens to the oral cavity; High-resolution micro computerized tomography (micro-CT) imaging of the mouse snout; (A) sagittal, (B,C) coronal and (D–F) transverse planes of a micro-CT scan (10 μm resolution). The NPD are filled with dental high-contrast substance shown in white. The micro-CT scan revealed a complex network of pathways connecting the nasal cavity with the oral cavity and the VNO (indicated by arrows, see Supplementary Videos S1–S3). The teeth and other bones are seen in white, as are the NPD which were filled with white dental filling. Soft tissues appear in gray, spaces and tunnels appear in black. VNO, vomeronasal organ; MOE, main olfactory epithelium; NPD, nasopalatine ducts. Scale bar: 1 mm.