Figure 7From: Possible contribution of endogenous carbon monoxide to the development of allergic rhinitis in guinea pigsImmunoreactivity of HO-1 in nasal mucosa. Immunoreactivity of HO-1 in allergic nasal mucosa: Cytoplasmic staining (brown) is seen in seromucous glands, mesenchymal cells and inflammatory cells of the lamina propria. (original magnification × 40).Back to article page