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Caveolae in endothelium and smooth muscle of saphenous arteries. Caveolae (cav; arrows) were found along the membranes of both endothelial (EC) and smooth muscle cells (SMC) of saphenous arteries of WKY, (A, B), SHR (C, D) and ACTH-treated rats (E, F). In the SHR and ACTH-treated rats, the incidence of caveolae was increased in both cell types (C, E compare A; D, F compare B). IEL, internal elastic lamina. Bar, 5 μm.
