Figure 3From: Cigarette smoke enhances Th-2 driven airway inflammation and delays inhalational toleranceHistology (Congo Red) of the airways of the four groups of mice after 8 week exposure to OVA or PBS aerosols combined with Smoke or Air in sensitized C57BL/6 mice (Combination Protocol 1) (Magnification = 400×; A = PBS/Air, B = PBS/Smoke, C = OVA/Air, D = OVA/Smoke).Back to article page