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Histological features of the sheep respiratory mucosa. (a) Transverse section of the respiratory mucosa containing both the respiratory epithelium and the underlying lamina propria. Hematoxylin and Eosin. Bar=100 µm. (b) Periodic Acid Schiff (PAS). (c) Alcian blue (pH 2.5). Higher magnification of the respiratory epithelium. Bars=20 µm. A, muscular artery; G, goblet cell; NG, nasal glands; V, venous sinus.
