Research Article
Expressions of MMP-12, TIMP-4, and Neutrophil Elastase in PBMCs and Exhaled Breath Condensate in Patients with COPD and Their Relationships with Disease Severity and Acute Exacerbations
Figure 2
Expressions of serum protein levels for (a) MMP-12, (b) TIMP-4, and (c) NE between different severities of airflow limitation in COPD patients. All data are presented as .
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