复发性自然流产(rsa)的定义是连续3次或以上在妊娠20周前发生妊娠的终止。
Abstract Recurrent spontaneous abortion (RSA) is defined as three or more consecutive pregnancy losses prior to the 20th week of gestation.
目的研究自然杀伤（NK） 细胞亚群比例变化与复发性自然流产（RSA）的关系。
Objective To study the variation of peripheral blood NK Sub-class ratio in recurrent spontaneous abortion.
目的研究自然杀伤（NK） 细胞亚群比例变化与复发性自然流产（RSA）的关系。
Objective To study the variation of peripheral blood NK Sub-class ratio in recurrent spontaneous abortion.
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