Cover: Absence of airway inflammation and mucus production 6 h after IL-13 treatment. Animals were treated intranasally with unconditioned medium (A and D) or IL-13 (B and E) or sensitized and challenged with OVA (C and F). Sections were stained with H & E (A-C) and PAS (D-F). Representative sections are shown. Arrows indicate the purple staining of mucus. For more information see article by Venkayya and colleagues 202.
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