Carotid artery thrombosis in Nos3^–/– mice. Carotid artery thrombosis following photochemical injury in Nos3^–/– mice (n = 9) compared with wild-type C57BL6/J mice (n = 10). All mice were fed the control diet. (A) Time to first occlusion (▪) or stable occlusion (□). Values are mean ± SE. (B) Percent of mice with a patent carotid artery as a function of time after administration of rose bengal.