粘附分子是指由细胞产生 ,能介导细胞与细胞、细胞与细胞外基质相互接触和结合的一类分子 ,为具有多种生物活性的跨膜糖蛋白 ,主要位于血管内皮细胞及各种白细胞表面。其种类很多 ,根据结构特点分为 :免疫球蛋白超家族、整合素家族、选择素家族、钙粘附素家族及尚未分类的粘附 Adhesion molecule refers to a class of molecules produced by cells that can mediate cell-cell, cell-extracellular matrix contact and binding to each other, and is a transmembrane glycoprotein with multiple biological activities, mainly located in vascular endothelial cells and various White blood cell surface. There are many different types of immunoglobulin superfamily, including immunoglobulin superfamily, integrin family, selectin family, cadherin family and not yet classified adhesion