Fig. 4From: Elevated serum matrix metalloprotease (MMP-2) as a candidate biomarker for stable COPDQualitative analysis of serum MMP-2 in controls vs COPD vs Asthma patients and serum MMP-9 from controls and COPD patients. The p-values are calculated by unpaired t-test with 95% confidence interval using Graphpad prism 5.0 softwareBack to article page