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近年来，细胞因子及自由基损害所致矽肺纤维化的实验研究较多。我们检测了临床矽肺患者的肿瘤坏死因子（ＴＮＦα）、红细胞超氧化物歧化酶（ＳＯＤ）、Ｔ淋巴细胞亚群ＣＤ４、ＣＤ８、ＣＤ４／ＣＤ８的改变，并与石棉肺患者进行对照研究。一、对象与方法１．对象：矽肺患者?
In recent years, cytokines and free radical damage caused by experimental study of silicosis more. We examined the changes of tumor necrosis factor (TNFα), erythrocyte superoxide dismutase (SOD), T lymphocyte subsets CD4, CD8 and CD4 / CD8 in clinical silicosis patients and compared them with asbestosis patients. First, the object and method 1. Who: silicosis patients?