难免性流产
Unavoidable abortion
以上为机器翻译结果，长、整句建议使用 人工翻译 。
结果对照组性染色体核型均正常，难免流产组性染色体核型异常2例，但两组的差异无显著性；
Results Nuclear types of normal villous tissues were all normal. There were 2 cases with abnormal nuclear types in inevitable abortion group, but the difference was not significant.
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