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习惯性流产或死胎是妊娠最常见的并发症，发病率可达20％－25％。其病因十分复杂。多年来，许多学者一直在探讨习惯性流产或死胎与自身免疫的关系。近年人们发现，不明原因的习惯性流产或死胎与自身抗体的存在有一定关系［‘，2］，其中，抗心磷脂抗体（ACA）尤为重要。为此，
Habitual abortion or stillbirth is the most common complication of pregnancy, the incidence rate of up to 20% -25%. The etiology is very complicated. For many years, many scholars have been discussing the relationship between habitual abortion or stillbirth and autoimmunity. In recent years, people have found that unexplained habitual abortion or stillbirth has a certain relationship with the presence of autoantibodies [2]. Among them, anticardiolipin antibodies (ACA) are particularly important. to this end,