CD44 and allergic asthma: Therefore, we investigated the contribution of CD44 to allergen-induced acute respiratory inflammation in a mouse model of allergic asthma induced by intranasal administration of Ascaris sum extract and mite antigens followed by treatment with 2 anti-CD44 monoclonal antibodies (mAbs), and analyzed the bronchoalveolar lavage fluid (BALF) contents and AHR.