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Immunohistochemical staining of nasal mucosa and lung with anti-human IgG antibody of transgenic (A, C, and E) and nontransgenic (B, D, and F) littermate mice of line 22. (Bar, 50 μm.) (A and B) Nasal squamous epithelium. (C and D) Nasal respiratory epithelium. (E and F) Lung alveolar and bronchiolar epitheliums.
