adhesion molecules

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molecules expressed on the surface of a cell that mediate the adhesion of the cell to other cells, or to the extracellular matrix. They bind to receptors, classed collectively as integrins. Adhesion molecules are grouped into classes: these include selectins; the immunoglobulin superfamily, containing ICAM, MadCAM, NCAM, PECAM, and VCAM; the cadherins; and CD44. Adhesion molecules play a part in morphogenesis (e.g., cadherins), and in the treatment of inflammation and wounds (e.g., selectins and the immunoglobulin superfamily).

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selectin (cell and molecular biology)