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Allergen-induced airway inflammation and remodeling. Lung tissue was obtained on Day 73 from saline control animals (A, C) and OVA-sensitized/challenged mice (B, D) and stained with hematoxylin and eosin (A, B) or Masson's trichrome stain (C, D). AW = airway; BV = blood vessel. Bars = 100 μm.
