Figure 3.

Detection of tyrosine hydroxylase mRNA by fluorescence in situ hybridization (FISH) in human umbilical cord artery (panel A‐C) and vein (panel D‐F); (panel A) HUA, DAPI staining in nuclei; (panel B) HUA, TH mRNA staining in the cytoplasm of endothelial cells (arrows); (panel C) HUA, overlay (DAPI + TH mRNA stainings [arrows]); (panel D) HUV, DAPI staining in nuclei; (panel E) HUV, TH mRNA staining in the cytoplasm of endothelial cells (arrows); (panel F) HUV, overlay (DAPI + TH mRNA stainings [arrows]). DAPI/FITC (400X, original magnification). L = lumen; TM = Tunica Media