Fig. 3From: The value of serum Krebs von den lungen-6 as a diagnostic marker in connective tissue disease associated with interstitial lung diseaseThe changes of serum KL-6 level in 20 patients with improved condition after CTX therapy. The serum KL-6 levels gradually decreased over time in the patients with disease remission diagnosis. A: before treatment, B: 3 months after treatment, C: 6 months after treatment. a, compared with before treatment p < 0.05; b, compared with 3 months after treatment p < 0.05Back to article page