CBS deficiency fails to increase susceptibility to carotid artery thrombosis. Time to first occlusion or stable occlusion in the carotid artery after (A) photochemical injury or (C) chemical injury was measured in 20-week-old mice. (B,D) The percentage of mice with a patent carotid artery (ie, free of stable occlusion) as a function of time after photochemical or chemical injury, respectively. Seven to 12 mice were studied in each group. Values are mean ± SE; *P < .05 compared with Cbs^+/+ or Tg-I278T Cbs^+/+ mice.