Abstract
The rostro-caudal extent of odorant receptor expression zones in the rat olfactory epithelium was analysed by means of in situ hybridization. Three broad non-overlapping zones were identified that extended along almost the entire anterior-posterior axis; each zone was composed of several separate bands running anterior to posterior throughout the olfactory epithelium. Superimposed onto these broad zones was the expression area of a particular receptor subtype (OR37); it was restricted to a small region of the epithelial sheet with a high density of reactive neurones in the centre and declining numbers towards the periphery of the region. A quantitative evaluation of the reactive cells revealed that, despite their diferent distribution patterns, all receptor subtypes were expressed in an equal number of neurones.
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Strotmann, J., Wanner, L., Helfrich, T. et al. Rostro-caudal patterning of receptor-expressing olfactory neurones in the rat nasal cavity. Cell Tissue Res 278, 11–20 (1994). https://doi.org/10.1007/BF00305773
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DOI: https://doi.org/10.1007/BF00305773