Although Ang 1-7 administration mitigated the Ang II-induced aortic dilatation (Figure 1C,D), the aortic expansion index, an indicator of biomechanical elasticity and recoil property of the aorta, was not significantly altered in the thoracic aorta of Ang II (±Ang 1-7)-infused mice (Figure 1E). This evidence concerns the gene ANGPT1 and Vascular dilatation.