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自然杀伤细胞 Natural killer(NK)活性,是指对未发作的肿瘤细胞,淋巴系细胞的杀伤作用,其机理尚不明确.最近曾有关于恶性肿瘤、免疫不全等自身免疫疾病的NK 活性低下的报导。Down 综合征容易合并恶性肿瘤,特别是对白血病的合并率较高,且易于感染。所以作为免疫监视机构之一进行 NK 活性的检查,这对阐明 Down 综合征免疫异常,有一定帮助.材料和方法对象是 Down 综合征患者21例,男11例,女10例。年令从21岁到54岁,根据染色体
The natural killer (NK) activity of natural killer cells refers to the killing effect on uninvolved tumor cells and lymphatic system cells, and the mechanism of NK killer (NK) activity is unclear. Recently, there have been reports of low NK activity in autoimmune diseases such as malignant tumors and immunodeficiency Reported. Down syndrome is easy to merge with malignant tumors, especially for the high rate of leukemia combined, and easy to infection. So as one of the immune surveillance agencies NK activity test, which clarify the syndrome of Down syndrome immune deficiency, a certain help.Material and methods of the object is Down syndrome patients 21 cases, 11 males and 10 females. Years are from 21 to 54 years old, according to the chromosomes