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Identification of the transplanted BMSCs. (A and D) Transplanted BMSCs demonstrated red fluorescence, and (B amd E) sections stained with VEGF and vWF produced green fluorescence. (C and F) The merged images show yellow fluorescence (magnification x400). There was no evidence of red or green fluorescence in the control or PAH groups. VEGF, vascular endothelial growth factor; vWF, von Willebrand Factor; BMSCs, bone marrow mesenchymal cells.
