Expression and localization of histamine H1, H2, and H3 receptors in rat olfactory epithelium

Histamine is an important chemical mediator in the development of allergic rhinitis and plays a key role in eliciting the nasal symptoms of the disorder. Histamine may also affect smell as a neurotransmitter. However, whether histamine receptors are present in the mammalian olfactory epithelium has not yet been examined. The aim of this study was to investigate the expression and distribution of histamine H1, H2, and H3 receptors in rat olfactory epithelium.

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