Fig. 4From: 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 12 patients after CTX therapy. The serum level of KL-6 showed no significant changes between 3 months and 6 months after treatment in non-responsive patients. A: before treatment, B: 3 months after treatment, C: 6 months after treatment. a, compared with before treatment p < 0.05Back to article page