Its ligand is sialyl Louis oligosaccharides or similar molecular structure,and expresses in neutrophils,eosinophils and normal bone marrow precursor cells.

• 其配体是唾液酸化的路易斯寡糖或类似结构的分子,在中性粒细胞、嗜酸性粒细胞和正常骨髓前体细胞上大量表达。