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整合素（Ｉｎｔｅｇｒｉｎｓ）是一类广泛存在的细胞表面粘附受体，介导细胞－细胞及细胞－细胞外基质的粘附和细胞内外的信息传递。
Integrins are a widespread family of cell surface adhesion receptors that mediate cell-cell and cell-cell extracellular matrix adhesion and intracellular and extracellular information transmission.