This plastic section shows a large lymphatic vessel
in the connective tissue of the colon. The vessel is lined by a simple
squamous epithelium of endothelial cells. Endothelial
cell nuclei are seen bulging into the lumen of the vessel. Note the
irregular shape of this vessel, which appears to cover the irregular surfaces
of the surrounding connective tissue. Note the smooth muscle cells at the
upper edge of the image.
