Figure 2. Hematoxylin and eosin staining of right common carotid arteries. (A-C) Hematoxylin and eosin stained vessels reveal plaques of different severities in the carotid arteries of the case group, ×40 (arrows). (D-F) Hematoxylin and eosin stained vessels show that the carotid arteries in the control group without obvious abnormalities, ×40.