Olfactory rosette

The sense of smell, with which we can enjoy a bursting rosebud on a summer s day, or a fine Cabernet, is a relatively recent evolutionary acquisition. For most of evolutionary time our ancestors did not breathe air and gained information about their surroundings by tasting their aquatic environments. The so-called olfactory rosettes in the heads of... 

Fig. 1 Molecular neuroanatomy of the zebrafish olfactory epithelium, a The zebrafish olfactory rosette, b A section of the olfactory rosette hybridized with an olfactory marker protein (OMP) complementary RNA probe. Dark signals represent ciliated olfactory sensory neurons (OSNs) in the olfactory epithelium (OE). c Three types of olfactory sensory neurons in fish, d Distinct locations and molecular signatures of ciliated and microvillous OSNs. The ciliated OSNs locate in a...

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