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Figure 1: (H&E stain, 20 × magnifications) Respiratory mucosa with dense stromal infiltrates of lymphocytes, eosinophils, a few plasma cells and a few ill-formed granuloma composed of epithelioid histiocytes and a few Langhans-type multinucleated giant cells

Figure 1: (H&E stain, 20 × magnifications) Respiratory mucosa with dense stromal infiltrates of lymphocytes, eosinophils, a few plasma cells and a few ill-formed granuloma composed of epithelioid histiocytes and a few Langhans-type multinucleated giant cells