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Fig. 3 | Respiratory Research

Fig. 3

From: Neutrophil extracellular trap (NET) formation characterises stable and exacerbated COPD and correlates with airflow limitation

Fig. 3

Quantification of neutrophils and NETs. a, b Evaluation in categories, bars represent percentages of total individuals sampled per study group (a) and per COPD severity stage (b). c, d Percentages of NET coverage in sputum preparations. c Bar chart showing means ± standard errors. d Boxplots with medians and interquartile ranges, whiskers have maximum 1.5 interquartile range. Supercript asterisks indicate significant differences between groups (P < 0.05). e Scatter plot illustrating the relation between FEV1 and the percentage of NET coverage, study groups represented by different symbols (Spearman’s rank correlation coefficient ρ = −0.562, P < 0.001)

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