Fig. 8
From: Olfactory sensory axons target specific protoglomeruli in the olfactory bulb of zebrafish
OSNs expressing odorant receptors from each of the three OR clades are intermixed within the olfactory epithelium. Cocktails for the or111 (clade A), the or128 (clade B), or or133 (clade C) subfamilies were used to probe multiple 3 dpf olfactory pits (5 olfactory pits for each subfamily). The positions of each labeled OSN were recorded, aligned using common reference points, and then projected onto the same spatial coordinates. OSNs expressing each of the 3 OR subfamilies are found medially, laterally, dorsally, and ventrally. No regionalized expression is apparent for any of the three, and they appear to be intermixed in Frontal, Lateral, or Horizontal views