(A) Aortas of AngII-infused ApoE-/-Opg+/+ and ApoE-/-Opg-/- mice were categorized into three groups based on diameter and the presence of visible hematoma (No Aneurysm, Aneurysm, and Dissection groups). Scale bars indicate 1 mm. (B) External diameter of the SRA in AngII-infused ApoE-/-Opg+/+ (gray, n = 16) and ApoE-/-Opg-/- (white, n = 16) mice. All measurements are shown as box plots and each measurement is shown as a white circle (No Aneurysm), gray triangle (Aneurysm), or black cross (Dissection). (C) The incidence (%) of aortic aneurysms is shown for No Aneurysm (white), Aneurysm (gray), and Dissection (black) groups. Statistical significance: p<0.05.