目的探讨引物原位标记法（PRINS）结合经腹脐血穿刺，应用于脐血中期细胞快速产前诊断18号染色体数目异常的可行性。
Purpose To study the feasibility of PRINS for rapid prenatal diagnosis of fetal 18 aneuploidy in metaphase cells from umbilical blood.
目的探讨引物原位标记法（PRINS）结合经腹脐血穿刺，应用于脐血中期细胞快速产前诊断18号染色体数目异常的可行性。
Purpose To study the feasibility of PRINS for rapid prenatal diagnosis of fetal 18 aneuploidy in metaphase cells from umbilical blood.
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