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TGF-β (A–D) and TGF-β1 receptor (TGF-β1R) staining in aorta (E–H) of TGFβ1 transgene (A and E), apoE−/− (B and F), apoE−/− × TGFβ1 (C and G), and control (C57Bl/6) mice (D and H). Both TGF-β1 and TGF-β1R staining were more intense in TGFβ1 transgene-bearing mice. Arrows indicate endothelial cells and smooth muscle cells with positive immunostaining for TGF-β1 and TGF-β receptor.
