Figure 4From: Similar matrix alterations in alveolar and small airway walls of COPD patients Elastin to collagen-hyaluronan index is decreased in COPD patients. Elastin to Collagen-Hyaluronan index of controls, GOLD II and GOLD IV patients in alveolar walls (A) and small airway walls (B). Data were analysed using ANCOVA and results are expressed as means + SD; *P < 0.05 compared to control, **P < 0.05 compared to control and GOLD II.Back to article page