[Specificity of bronchopulmonary infection in cystic fibrosis].

Chronic lung colonization in CF is specific and due mainly to Pseudomonas aeruginosa. Since no phagocytic or immunological abnormalities seem to be responsible for this specificity, it is possible that post-translational alterations of respiratory mucins biosynthesis occur and modify the affinity of mucins for Pseudomonas aeruginosa.