3D microCT renderings using both solid and various levels of transparency to reveal aorta lumen, vascular wall, and surrounding PVAT of the descending thoracic aorta at 30 weeks old. Control: A) Solid, longitudinal cut plane revealing aorta lumen, vascular wall, and surrounding PVAT, B) Relative transparency of aorta lumen, vascular wall, and surrounding PVAT. ApoE: C) Solid, longitudinal cut plane revealing aorta lumen, vascular wall, and surrounding PVAT, D) Relative transparency of aorta lumen, vascular wall, and surrounding PVAT. The same 3D reconstruction thresholding conditions were used for all solid and relative transparent models..