Figure 3From: The role of bronchial epithelial cells in the pathogenesis of COPD in Z-alpha-1 antitrypsin deficiencyImmunohistochemistry of bronchial epithelial biopsy. Endobronchial biopsy sections taken from patients homozygous for M-AAT or Z-AAT were fixed and stained with the ATZ11 antibody. Evidence of polymers of Z-AAT was confirmed in the epithelial cells and submucosa of Z-AAT homozygote tissue. Definition of abbreviation: AAT = alpha-1 antitrypsin.Back to article page