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Celebrating 50 years of Trisomy 21

Posted in Events by Matt at WelcometoIllinois on January 28, 2009

John Langdon Down may have described Down’s syndrome in 1866 but it wasn’t until the publication of Professor Jerome Lejeune‘s discovery of the extra copy of chromosome 21 in 1959 that the ultimate cause of Down’s syndrome was known.

March 21 is once again World Down Syndrome Day and there will be a special focus this year on the work of Professor Lejeune and the progress that has been made since his discovery.

“Professor Lejeune provided inspiration to parents and professionals who met him, and drew strength and hope from his optimism and his simple and profound dedication to humanity. The Lejeune Institute inParis continues to sponsor research in this area” said Mrs. Penny Robertson, President of Down Syndrome International. “But while there is much to be proud of in western countries in the services provided for people and families with Down syndrome, there is still an enormous amount of work to be done in many countries”.


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  1. […] 21, 2009 by welcometoillinois As previously mentioned today is World Down Syndrome Day, marking 50 years since the publication of Professor Jerome […]

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