CD44 is a transmembrane receptor protein, belonging to the family of adhesion molecules, which is involved in cell-cell and cell-matrix interactions.

CD 44是一种跨膜受体蛋白，属于黏附分子家族，介导细胞与细胞、细胞与基质之间的黏附。

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Cell-cell and cell-matrix interactions of hematopoietic cells and hematopoietic niche are facilitated by its three dimensional conformation.

造血干细胞龛的三维结构利于细胞与细胞、细胞与基质间的交流。

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