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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
Neurospora crassa Life Cycle
By: Amy Pribadi
| Published: Oct 12, 2016
This diagram shows the life cycle of Neurospora crassa, a mold that grows on bread. N.
Neurospora crassaMicrobiologyMicroscopyGrowthdevelopment
George Herbert Hitchings (1905–1998)
By: Eboni E. Andersun
| Published: Jun 25, 2024
George Herbert Hitchings researched and developed medications that targeted specific parts of DNA replication processes to treat cancers and various…
Nucleoside analogDNA ReplicationDrug DevelopmentAcyclovirPharmacology
Gertrude Belle Elion (1918–1999)
By: Eboni E. Andersun
| Published: May 23, 2024
Gertrude Belle Elion was a twentieth-century scientist in the US who researched the structure of viral DNA to help develop anti-viral medications.…
AcyclovirHerpesvirus 1, HumanHerpesvirus 2, HumanDNA, ViralHIV (Viruses)
Dinosaur Egg Parataxonomy
By: Madison Paige
| Published: Mar 23, 2015
Dinosaur egg parataxonomy is a classification system that organizes dinosaur eggs by descriptive features such as shape, size, and shell thickness.…
DinosaursDinosaurs--EggsPaleobiologyFossilsEmbryos
A History of Embryology (1959), by Joseph Needham
By: Karen Wellner
| Published: Jun 28, 2010
In 1931 embryologist and historian Joseph Needham published a well-received three-volume treatise titled Chemical Embryology. The first four chapters…
LiteratureNeedham, Joseph, 1900-1995Publicationshistory
Katharine McCormick (1876-1967)
By: Aliya Buttar
| Published: Nov 08, 2007
Katharine Dexter McCormick, who contributed the majority of funding for the development of the oral contraceptive pill, was born to Josephine and…
PeopleContraceptionethicsReproductionReproductive Rights
Samuel Randall Detwiler (1890-1957)
By: Adam R. Navis
| Published: Nov 01, 2007
Samuel Randall Detwiler was an embryologist who studied neural development in embryos and vertebrate retinas. He discovered evidence for the…
PeopleTransplantationBiographyNeurons
Frazer v. Schlegel (2007)
By: Alexis Darby
| Published: Aug 04, 2021
On 20 August 2007, in Frazer v. Schlegel, the United States Court of Appeals for the Federal Circuit decided that researchers Ian Frazer and Jian…
LawFrazer, I. H. (Ian H.)Zhou, JianGlaxoSmithKlineZur Hausen, Harald
Etienne Stephane Tarnier (1828–1897)
By: Kelsey Locey
| Published: Jul 19, 2017
Etienne Stephane Tarnier was a physician who worked with premature infants in France during the nineteenth century. He worked at the Maternité Port-…
IncubatorsPuerperal septicemiaAsepsis and antisepsisPremature InfantsPerinatology