Fig. 1From: The role of matrix metalloproteinases in patients with pulmonary hypertension: data from a prospective studyComparison of plasma biomarker levels. Box plots show plasma biomarker concentrations in pulmonary hypertension (PH) patients (n = 68) and controls (n = 12). a Tissue inhibitor of matrix metalloproteinase’s (TIMP-4), b Matrix metalloproteinase (MMP-2), and c N-terminal B-type natriuretic peptide (NT-proBNP)Back to article page