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The microvessels: capillaries, post-capillary venules, venules and arterioles are built of a single layer of endothelial cells (E, blue) and covering pericytes (P, yellow), which are both embedded within fibrous, commonly produced, basement membrane (BM, black). Endothelial cells are inter-connected by cell junctions and are connected to the pericytes by adhesion plaques and peg-sockets with the gap junctions (red).
