Fig. 6From: Serum SP-A and KL-6 levels can predict the improvement and deterioration of patients with interstitial pneumonia with autoimmune featuresCorrelations between Delta SP-A and Delta KL-6 and changes in pulmonary function test parameters. SP-A, surfactant protein-A; KL-6, Krebs von den Lungen-6; DLCO, diffusing capacity for carbon monoxide; FVC, forced vital capacity; FEV1, forced expiratory volume in 1 sBack to article page