Karyotyping for adanced maternal age was performed by amniocentesis and demonstrated a normal male karyotype (46 XY with G-banding).
Karyotyping for adanced maternal age was performed by amniocentesis and demonstrated a normal male karyotype (46 XY with G-banding).
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）。