以下为句子列表：
英文: After amniocentesis and prenatal counseling, the couple chose to terminate the pregnancy.
中文: 经羊膜穿刺术检查染色体正常。
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英文: Karyotyping for adanced maternal age was performed by amniocentesis and demonstrated a normal male karyotype (46 XY with G-banding).
中文: 对此高龄孕妇行羊膜穿刺染色体组型分型检查，先是正常男性（46XY，G带显带技术）。
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