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PASMC characterization. Proximal PASMC derived from lung donors (A, D, G), non-thromboembolic PH patients (B, E, H) and CTEPH patients (C, F, I) were stained with antibodies raised against α-SMA (A, B, C), desmin (D, E, F) and SMMHC (G, H, I). Nuclei were counterstained using DAPI (blue).
