13774214275
13774214275
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更新时间：2025-08-08
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Sialyl LewisX （sLeX）, also known as cluster of differentiation 15s （CD15s） or stage-specific embryonic antigen 1 （SSEA-1）, is a tetrasaccharide carbohydrate which is usually attached to O-glycans on the surface of cells. It is known to play a vital role in cell-to-cell recognition processes. It is also the means by which an egg attracts sperm; The discovery of the essential role that this tetrasaccharide plays in the fertilization process was reported in August 2011. Sialyl Lewis X is also one of the most important blood group antigens and is displayed on the terminus of glycolipids that are present on the cell surface. The sialyl Lewis X determinant, E-selectin ligand carbohydrate structure, is constitutively expressed on granulocytes and monocytes and mediates inflammatory extravasation of these cells. Resting T- and B-lymphocytes lack its expression and are induced to strongly express sialyl Lewis X upon activation.?
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