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Position relationship between pericytes and ECs.
Pericytes are embedded in the basal membrane of capillary endothelial cells and communicate with endothelial cells via gap junctions at peg-sockets and other paracrine signaling factors. Abbreviations: Ang-1, angiopoietin-1; TGF-β1, transforming growth factor-β1; PDGF-B, platelet-derived growth factor B; S1P, sphingosine-1-phosphate.
