Fig. 3.

Three-dimensional architecture of elastic fibers in the human aortic media. a: Normal subject. b: Aortic dissection patient. The aorta was treated with formic acid to remove the components other than the elastic fibers, and then examined by scanning electron microscopy. Upper, intimal side. Lower, adventitial side. Scale bar = 20 µm (Reproduced from Ref. 12).