Fig. 6.

Fluorescence studies of endothelium-denuded iliac artery and aortic rings loaded with DHE in the presence of L-NAME/indomethacin. (A) and (B) Images and bar graphs showing that neither artery type exhibited evidence of excess ROS production in the media of the vessel wall following exposure to 100 μM arsenite for 90 min. The adventitia of both vessels displayed autofluorescence, but its appearances were unaltered by exposure to arsenite. Scalebars identify the vessel lumen. n denotes the number of animals studied.