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Ｎ－乙酰神经氨酸（唾液酸，ＳＡ），是细胞膜糖蛋白、糖脂的重要成分，在细胞的凝集、细胞间的接触抑制、免疫功能等方面发挥作用。ＳＡ广泛分布于人体组织、体液等，神经系统中的含量尤其丰富。测定ＳＡ浓度在肿瘤患者中的意义比较明确［１］，但有关脑卒中患者ＳＡ浓度变化
N-acetylneuraminic acid (sialic acid, SA) is an important component of cell membrane glycoproteins and glycolipids and plays a role in cell aggregation, cell-cell contact inhibition and immune function. SA is widely distributed in human tissues, body fluids, etc., the content of the nervous system is particularly rich. The determination of SA concentration in cancer patients more clearly the meaning of [1], but the changes in patients with stroke SA concentration