Figure 2From: Increased levels of soluble interleukin-6 receptor and CCL3 in COPD sputumUnivariate Correlations of COPD sputum CCL3 with IL-6 and sIL-6R. Univariate correlation between sputum (A) IL-6 and (B) sIL-6R with CCL3 in COPD patients. r represents the Spearman Rank correlation coefficient. Each dot represents the data for an individual patient.Back to article page