Abstract
Confocal imaging of the mouse aorta is a powerful, indispensable technique for the study of cardiovascular pathology ex vivo. Whole mount en face preparations allow visualization of wide areas of the luminal vessel surface, thus enabling a thorough analysis of multiple cellular and structural features of the endothelial cell-rich intimal layer. This method is a suitable tool for the study of endothelial cell dysfunction and leukocyte infiltration, both of which contribute to the onset of pathological vascular conditions such as atherosclerosis. This chapter provides a complete guide on how to perfuse-fix mouse aorta, dissect the vessel, immunostain target proteins, and carry out en face confocal image acquisition and analysis.