Localization and Upregulation of the Nasal Histamine H1 Receptor in Perennial Allergic Rhinitis

<table> Immunohistochemical staining for histamine H1 receptor in human nasal mucosa. The arrows indicate the intense immunoreactivity of H1 receptor on vascular endothelial cells (V) in superficial region. In contrast, deep venous sinusoids (S) have little or no immunoreactivity for H1 receptor. (ep); airway epithelium, (g): submucosal glands. Scale bar = 50 <i>μ</i>m.</table>

Mediators of Inflammation

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Figure 5

Figure 5: Localization and Upregulation of the Nasal Histamine H1 Receptor in Perennial Allergic Rhinitis 