形成干细胞源性肿瘤（畸胎瘤）是观察到嫁接未分化的胚胎干（ ES细胞） ，胚体来源细胞（ EBCs ） ，或哺乳动物胚胎是一个重大障碍干细胞治疗。
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EBCS Electronic Business Communications System 电子商业通信系统
EBCs in history, geography and foreign languages are due to be brought in later.
BBC: Education & Family
EBCs for other subjects - history, geography and languages - are due to be rolled out later.
BBC: Gove challenged over exam changes by watchdog Ofqual
However, Mr Gove stopped short of introducing a new qualification for 16-year-olds called the English Baccalaureate Certificate (EBCs).
BBC: GCSE changes 'could see unpredictable results'
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