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Morphology of aneurysm and aortic arch were checked by H&E (B,D,F,H) and Masson Trichrome (A,C,E,G). No morphological evidence of injury was found in sampled aneurysm (A,B) and sampled aorta (C,D), compared with control aneurysm (E,F) and control aorta (G,H). Scale bar: 500 µm.
