Fig. 2From: Bronchoscopy-guided bronchial epithelium sampling as a tool for selecting the optimal biologic treatment in a patient with severe asthma: a case reportImmunohistochemistry staining of bronchial epithelium for the patient. a Significant IgE-positive epithelium cells in the specimen, indicating a strong IgE-mediate immune reaction in the patient’s airway. b Weak positive staining of IL-5 in the submucosal areaBack to article page