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Downe syndrome facial features

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Posted by Ellen Stumbo Down Syndrome It was when an English Physician named John Langdon Down first described the similarities of the condition that came to be known as Down syndrome Down, named after him. This happened before we had any insight into the genetic makeup of individuals, so it was not known that the presence of an extra 21st chromosome caused Down syndrome. At the time, an individual would be diagnosed by noticing certain characteristic physical features.

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