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约翰·朗顿·唐(John Langdon Haydon Down,1828年11月18日-1896年10月7日),英国医生,以首次描述唐氏综合症的病理而闻名。
John Langdon Haydon Down, DS (18 November 1828 – 7 October 1896), was a British physician best known for his description of a relatively common genetic disorder, now known as Down syndrome, which he originally classified in 1862.
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