Fig. 2From: Alpha-1 antitrypsin deficiency as a common treatable mechanism in chronic respiratory disorders and for conditions different from pulmonary emphysema? A commentary on the new European Respiratory Society statementThe protease/anti-protease balance in healthy subjects (a), AATD patients (b) and bronchiectasis patients (c). Definitions. AAT = alpha-1 antitrypsin deficiency; NE = neutrophil elastase; LLN = lower limit of normalityBack to article page