Marthe Gautier (1925–2022)
Born 1925 CE, died 2022 CE.
Marthe Gautier (French pronunciation: [maʁt ɡotje]; 10 September 1925 – 30 April 2022) was a French medical doctor and researcher. She discovered the cause of Down syndrome being the existence of a third instance of chromosome 21 in 1958, after which the disorder was given the additional name trisomy 21. This discovery made it possible to prenatally diagnose the disorder. A colleague of hers, Jérôme Lejeune, took full credit for the discovery. In 2009, she published a testimony of her own role in the discovery.
Text from the Wikipedia article Marthe_Gautier, licensed CC BY-SA 4.0.