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. 2016 Nov 15;6:37119. doi: 10.1038/srep37119

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Copyright © 2016, The Author(s)

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(a) Representative confocal stack of 5-HT2B expressing ORN axons (green) crossing the AL commissure. (b) 5-HT2B expressing ORN soma within the antennae. (c) 5-HT2B expressing ORN soma within the maxillary palp. To confirm antennae and maxillary palp ORNs express 5-HT2B, one-day old adults’ antennae (d), maxillary palp (e), or both (f) were removed. Removal of either structure individually only partially abolishes 5-HT2B ORN axons, while removal of both abolishes 5-HT2B ORN axons. The white arrowhead in (a) and (d–f) highlights ORN axons crossing the AL commissure. Neuropil in (a) and (f) are delineated by α-Bruchpilot (α-Brp; magenta) labeling. All scale bars = 20 um.