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Correlations between (A) blood concentrations of MPO and NE protein (ρ=0.4, P<0.05, Spearman rank correlation) and (B) levels of MPO and NE mRNA in blood leukocytes (ρ=0.89, P<0.001, Spearman rank correlation) from smokers with obstructive pulmonary disease and chronic bronchitis (n=34) during exacerbations. The data are presented as individual values.
Abbreviations: MPO, myeloperoxidase; NE, neutrophil elastase.
