31 for 21, October 9th

October 9, 2009 on 1:00 am | In Down syndrome, 2009- 31 for 21!, Dr. Jérôme Lejeune, John Langdon Down | 2 Comments
Get It Down; 31 for 21

How about a quick histoy lesson today??

Most people credit John Langdon Down for discovering the common traits associated with Down syndrome in 1866 he wrote a paper entitled “Observations on the Ethnic Classification of Idiots” in which he wrote the theory that it was possible to classify different types of conditions by ethnic characteristics including what he called Mongolism which (thankfully) now is known as Down syndrome.

Dr. Jérôme Lejeune is actually the one who discovered the extra 21st chromosome that truely makes Down syndrome, otherwise known as Trisomy 21 in 1959.

Dr. Lejeune found the 21st chromosome by taking a skin sample from a patient who had Down syndrome and looking at the chromosomes and saw the extra 21st. He spent the rest of his career (and life) researching Trisomy 21 and specializing in the treatment of individuals who have Down syndrome.

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