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Figure 2 | Respiratory Research

Figure 2

From: Up-regulation of Toll-like receptors 2, 3 and 4 in allergic rhinitis

Figure 2

Immunoreactivity of TLR2, TLR3 and TLR4 in nasal mucosa. Immunohistochemical localization of TLR2, TLR3 and TLR4 in biopsies of nasal mucosa. Representative pictures of control (A) and TLR-stained (B-F) sections. No immunoreactivity was observed in control sections when the primary antibody was omitted (A). In an adjacent section, immunoreactivity for TLR3 is seen in the apical part of the epithelial lining and in a few scattered intraepithelial leukocytes (B). Pictures C and D illustrate representative staining patterns of TLR2 and TLR4, respectively. Areas with a thin repairing epithelium display a particularly intense staining, TLR3 (E) and TLR4 (F). Scale bars: A, B and D = 85 μm, C = 30 μm, E and F= 50 μm.

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