Bronchial compared with pulmonary circulation |
Structure of vessels |
Expression of adhesion molecules |
Size and hemodynamic characteristics of the site of leukocyte |
emigration |
Structural differences in alveolar walls compared with bronchial walls |
Cell types present |
Anatomy and properties of the extracellular matrix |
Response of structural cells at each site to inflammatory stimuli |
Mediators released (cytokines, chemokines, and others) |
Adhesion molecules expressed and used |
Contribution of biomechanical events |
Stimuli and disease processes affecting alveoli compared with airways |