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Jérôme Lejeune (1926−1994)
By: Maeen Arslan, Grace Fitzgerald
| Published: Aug 19, 2021
Jérôme Lejeune was a French physician and researcher who studied genetics and developmental disorders. According to the Jérôme Lejeune Foundation, in…
Down syndromeMongolismKaryotypeGenetic ScreeningGenetic Concepts
Using Digital PCR to Detect Fetal Chromosomal Aneuploidy in Maternal Blood (2007)
By: Meilin Zhu
| Published: Nov 08, 2017
In 2007, Dennis Lo and his colleagues used digital polymerase chain reaction or PCR to detect trisomy 21 in maternal blood, validating the method as…
Polymerase chain reactionNucleic Acid Amplification TechniquesDown syndromeDNAAneuploidy
Noninvasive Fetal Aneuploidy Detection for Trisomy 21, 13, and 18
By: Cassidy Possehl
| Published: Apr 06, 2017
Noninvasive fetal aneuploidy detection technology allows for the detection of fetal genetic conditions, specifically having three chromosomes, a…
TechnologyDown syndromeAneuploidyLo, Y. M. DennisCleft Palate
National Association for Down Syndrome (1960–)
By: Grace Rauch
| Published: Dec 22, 2022
The National Association for Down Syndrome, or NADS, is an organization that was founded in 1960 by Kathryn McGee in Chicago, Illinois, to support…
OrganizationDown syndromeChildren with Down syndromeMothers of children with Down syndromeDown syndrome--Patients--Biography
Trisomy 21 (Down Syndrome)
By: Grace Fitzgerald
| Published: Aug 01, 2022
As of 2022, Trisomy 21 is the most common type of trisomy, or a condition where the person has three instead of the normal two copies of one of the…
Genetic DisordersGenetic disorders in childrenGenetic disorders in pregnancyGenetic disorders--DiagnosisDown syndrome
“Prenatal Diagnosis of Down Syndrome: Mothers’ Reflections on Supports Needed From Diagnosis to Birth” (1998), by David T. Helm, Sara Miranda, and Naomi Angoff Chedd
By: Grace Rauch
| Published: Jun 04, 2024
On 1 February 1998, David T. Helm, Sara Miranda, and Naomi Angoff Chedd published “Prenatal Diagnosis of Down Syndrome: Mothers’ Reflections on…
Down syndromeCongenital AbnormalitiesGenetic disorders in pregnancygenetic testingAmniocentesis
John Langdon Down (1828–1896)
By: Risa Aria Schnebly, Grace Fitzgerald
| Published: Aug 12, 2021
John Langdon Down studied medicine in England in the nineteenth century and was one of the first people to develop a complete description of the…
Down syndromeDevelopmental DisabilitiesPartial Trisomy 21 Down SyndromeTrisomyPartial Trisomy