... 美迪医讯 的21号染色体引发的胚胎干细胞的最早的发育异常 【 2008-9-9 发布 】 美迪医讯 研究唐氏综合症（Down Syndrome，DS）的科学家发现了由额外的21号染色体而引发的胚胎干细胞最早的发育异常。
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于是我们就能更深入研究唐氏综合症这类疾病了。
This could provide new insights into conditions such as Down's syndrome.
研究表明医学学生很少受到有关残障人士知识的培训，许多做孕期检查的医生会强调唐氏综合症的负面信息。他说。
Studies show medical students are poorly trained about people with disabilities and that some doctors who make a prenatal diagnosis emphasize negative information about the condition, he said.
一项最近的研究发现，唐氏综合症患者与未患有此病的人相比，罹患实体瘤的概率只有后者的大概十分之一。
A recent study found that people with Down syndrome are only about one-tenth as likely to get a solid-tumor cancer as are people without the syndrome.
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