We have previously shown that free granulocyte elastase (GE) is present for prolonged periods in CF bronchial secretions and that this enzyme may contribute to microbial persistence by proteolysis ...

4–6 Much of the difficulty in evaluating the role of infection in the pathogenesis of chronic bronchitis is due to inadequate understanding of the bacteriologic contents of bronchial secretions.

Nasal suction:- What is the clinical and cost effectiveness of suction to remove secretions from the upper respiratory tract compared with minimal handling? Why this is important:- Suction is a ...