<prompt> Integrins include all the following Receptor except ?FibronectinGlycoprotein on platelet surfaceLeukocyte adhesion moleculePlatelet derived growth factor  <response>: Ans. is d i.e., Platelet derived growth factor o Integrin superfamily consists of proteins that promote cell to cell or cell to matrix adhesion in contrast selectins promote only cell to cell adhesion. o The extracellular domain binds to : - Matrix glycoproteins Adhesions molecules on other cells Activated complement components Fibronectin and vitronectin molecules. 