Figure 3

PAEC characterization. Proximal PAEC derived from lung donors (A, D, G), non-thromboembolic PH patients (B, E, H) and CTEPH patients (C, F, I) were immuno-labeled with antibodies raised against CD31 (A, B, C) and vWF (D, E, F) and stained with Dil-Ac-LDL (G, H, I). Nuclei were counterstained using DAPI (blue). Insert F, the arrow indicates the presence of Weibel-Palade bodies where vWF is stored.