Fibronectin, basement membranes

Unlike the acellular basement membranes, the interstitial connective tissue consists of cells distributed in meshwork of collagen fibers, glycoproteins (e.g., fibronectin), proteoglycans, and hyaluronic acid. The main forms of collagen found in interstitial connective tissue are known as type I, II, and III or interstitial collagen. 

The rest of the liver volume (about 15%) consists of intravascular space, the space of Disse, lymphatic vessels, and extracellular matrix molecules [8], These matrix proteins, located predominantly in the space of Disse and around blood vessels, consist mainly of basement membrane molecules (collagen type IV, laminin, and fibronectin) and fibronectin) and small amounts of collagen type I, III, VI, undulin, tenascin, and proteoglycans. The matrix proteins determine the specific phenotype and functions of many resident hepatic cells [9-11],... 

Cell attachment to the glomerular basement membrane is mediated by laminin, entactin, and fibronectin, at least partly through integrin receptors on the cell surface of both endothelial and visceral epithelial cells. 

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