In contrast to abdominal aortic aneurysm (AAA). aneurysms of the thoracic ascending aorta (TAA) are not associated with a mural thrombus. Mechanistic understanding of the involvement of vascular smooth muscle cells (VSMCs) in thrombus formation is lacking. We aim to determine (i) whether thrombin generation at the surface of VSMCs is increased in AAA. https://www.roneverhart.com/Electric-Swingarm-XL/