Fig. 4From: The role of matrix metalloproteinases in patients with pulmonary hypertension: data from a prospective studyCorrelation between disease severity and MMP-2 concentration. We have box plots that show biomarker levels in different patient subpopulations. Patients were grouped based on disease severity determined as a WHO classification, b systolic arterial pressure (sPAP), and c the severity of TV regurgitationBack to article page