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Plasma levels of tyrosin-protein kinase 7 (Axl), epithelial neutrophil activating protein 78 (ENA-78), growth-regulated oncogene (GRO) and lymphotactin in healthy, patients with stable COPD (sCOPD), and AECOPD patients on days 1, 3 and 7–10. * and ** stand for P values less than 0.05 and 0.01, respectively, as compared with healthy control. † and †† stand for P values less than 0.05 and 0.01, respectively, as compared with sCOPD patients.
