自身组织抗原是指因精神紧张、工作压力、受微生物感染、电离辐射、烧伤等生物、理化因素影响而使结构或组成发生改变的自身组织抗原，以及由于外伤或感染而释放的自身隐蔽抗原，也可成为过敏原。
而对于那些自身免疫紊乱的病人来说，他们的免疫系统无法分辨正常的组织与抗原。
In patients with an autoimmune disorder, the immune system can't tell the difference between healthy body tissue and antigens.
这些数据提示，疾病共同的生物学机制，比如有关自身免疫的组织损伤和对食物中抗原的不耐受，可能这两种疾病的共同病因。
These data suggest that common biologic mechanisms, such as autoimmunity-related tissue damage and intolerance to dietary antigens, may be etiologic features of both diseases.
目的定量检测各种结缔组织疾病（CTD）患者血清中抗可提取核抗原（ENA）自身抗体滴度，并探索其临床意义。
Objective To study the clinical significance of the quantitative determination of the various anti extracted nuclear antigens(ENA) autoantibodies in the various connective tissue disease (CTD).
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