Figure 5From: The elevation of serum napsin A in idiopathic pulmonary fibrosis, compared with KL-6, surfactant protein-A and surfactant protein-D Correlation between napsin A levels and KL-6 levels (Spearman r = 0.611, P < 0.01, A), SP-A levels (Spearman r = 0.706 P < 0.01, B), and SP-D levels (Spearman r = 0.730, P < 0.01, C) in patents with IPF. Back to article page