Figure 3
From: Canine mesenteric artery and vein convey no difference in the content of major contractile proteins
Electron micrographs of a tertiary mesenteric vein branch. Endothelial layer (E, Panel A), internal elastic lamina (IL), smooth muscle cells (SM, Panels A and B), collagen fibrils (C, Panels B and C), dense bodies (DB, Panel C), mitochondria (M, Panel C), sacroplasmic reticulum (SR, Panel A), caveolae (*, Panel D) and a basal lamina (BL, Panel D), external elastic lamina (EL, Panel D), tunica advential layer (A, Panel D). Scale bar is as indicated for each panel.