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T1-weighted 3D images (naïve, without contrast), with visualization of the VNO in (A) dorsal, (B) transverse, and (C) sagittal projections. The green-blue cross shows a VNO location, corresponding to the blue-red lines crossing in the sagittal image. VNO, vomeronasal organ. The red, blue, and green lines correspond to levels of the transverse, dorsal, and sagittal projections, respectively.
