Fig. 1From: Pro-cathepsin D as a diagnostic marker in differentiating malignant from benign pleural effusion: a retrospective cohort studyCorrelation of plasma pro-cathepsin D and pleural fluid pro-cathepsin D levels in study participants (n = 81; Spearman’s r = 0.870, 95% confidence interval = 0.803–0.916, p < 0.0001)Back to article page