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. 2021 Apr 23;15:632549. doi: 10.3389/fnana.2021.632549

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Copyright © 2021 Lothmann, Amunts and Herold.

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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Schematic representation of the investigated olfactory areas. Coronal sections of the mouse (C57BL/6) brain along the anterior-posterior axis (related Bregma levels alongside). A sagittal section serves for further local orientation of certain areas. The investigated areas are indicated by different colors (see legend). Dashed lines show non olfactory areas for a better orientation. Gray areas show fiber tracts, whereas dark gray areas represent the subventricular zone. Boundaries adapted by the Allen Brain Reference Atlas (Lein et al., 2007; Dong, 2008).