Figure 6
From: Similar matrix alterations in alveolar and small airway walls of COPD patients
Correlation between alveolar and small airway wall pSMAD2, despite absence of a relationship with COPD. Photomicrographs of pSMAD2 staining in blue of one representative control subject (A) and a COPD patient (B). Semi- quantitative scored pSMAD2 staining in alveolar walls (C) and small airway walls (D). Data were analysed using ANCOVA and results are expressed as means + SD.