Supernumerary glomeruli persisted after interrupting chronic odorant exposure.

<p>Figures A and B show representative I7tauGFP glomeruli (green) in coronal brain slices stained with DAPI (red) from non-exposed mice and from those exposed to 10% heptaldehyde and later raised without the odorant until postnatal day 50. Arrowheads indicate supernumerary glomeruli. Scale bar 100 µm. Figure in C shows a schematic side view representation of the olfactory bulb, indicating the anterior ventrolateral position of I7 glomeruli in the coronal plane in non-exposed mice and in those exposed to 10% heptaldehyde, according to the location across brain slices. Bar graph in D shows the average number of I7 glomeruli per half bulb 30 days after the end of exposure. Kruskal-Wallis sum rank test: p<0.01 followed by Dunn multiple comparison test: ***, P<0.001.