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. 2022 Aug 11;10(8):1949. doi: 10.3390/biomedicines10081949

Figure 2.

Figure 2

Figure 2

Sputum Biomarkers in COPD Stable and Exacerbating Samples: (a) IL-1β, data is presented as paired concentrations, data analysed using Wilcoxon signed rank test. ** p ≤ 0.01. (b) IL-6, data is presented as paired concentrations, data analysed using a paired t-test. * p < 0.05. (c) TNF-α, data is presented as paired concentrations, data analysed using Wilcoxon signed rank test. ** p < 0.01. (d) IL-8, data is presented as paired concentrations. (e) MPO, data is presented as paired concentrations.