Figure 5.

HDGF expression in human control and PAH pulmonary arteries. HDGF immunostaining is shown in representative non‐transplanted control and PAH (APAH‐Shunt and APAH‐CTD) lungs. HDGF positive immunostaining is red. White bar indicates the arterial smooth muscle medial layer and arrows the endothelial layer. Picture inserts highlight representative pulmonary arteries. A 100 μM scale bar is included for reference. APAH, PAH associated with other conditions; CTD, connective tissue disease; HDGF, hepatoma‐derived growth factor; PAH, pulmonary arterial hypertension