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Increased expression (identified as dark brown color) of angiotensin II type 1 (AT1R) and type 2 receptors (AT2R) was observed in vascular smooth muscle cells of Marfan syndrome (MFS) (B, E) and bicuspid aortic valve (BAV) (C, F) aortic media compared to control aortic media (A, D) (hematoxylin;magnification 250×).
