CD62, an integral membrane sialoglycoprotein 140 kD, also designated GMP-140 (granule membrane protein 140) or PADGEM, which is expressed in platelet alpha granules that are translocated to the platelet surface upon activation with strong agonists. A similar protein, present in endothelial cell Weibel-Palade bodies, is transiently expressed on the surface of activated endothelial cells and functions as adhesion molecule for granulocytes. The antibody does not interfere with the functional activity of CD62 as an adhesion receptor for neutrophils.Synonyms: CD62 antigen-like family member P, GMP-140, GMRP, GRMP, Granule membrane protein 140, LECAM3, Leukocyte-endothelial cell adhesion molecule 3, PADGEM, SELP