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Diprosopus (Craniofacial Duplication)
By: Corinne DeRuiter
| Published: Aug 16, 2011
Diprosopus is a congenital defect also known as craniofacial duplication. The exact description of diprosopus refers to a fetus with a single trunk,…
Craniofacial AbnormalitiesReproductionFetusCongenital Disorders
Roy John Britten (1919-2012)
By: Abhinav Mishra
| Published: Oct 24, 2014
Roy John Britten studied DNA sequences in the US in the second half of the twentieth century, and he helped discover repetitive elements in DNA…
DNAGenomesCalifornia Institute of TechnologyGenetic regulationMice
"Viable Offspring Derived from Fetal and Adult Mammalian Cells" (1997), by Ian Wilmut et al.
By: Zane Bartlett
| Published: Oct 10, 2014
In the 1990s, Ian Wilmut, Jim McWhir, and Keith Campbell performed experiments while working at the Roslin Institute in Roslin, Scotland. Wilmut,…
CloningMolecular CloningClone CellsCampbell, Keith, 1954-2012Roslin Institute
Meselson, Stahl, and the Replication of DNA: A History of "The Most Beautiful Experiment in Biology" (2001), by Frederic Lawrence Holmes
By: Victoria Hernandez
| Published: Jul 23, 2017
In 2001, Yale University Press published Frederic Lawrence Holmes' book, Meselson, Stahl, and the Replication of DNA: A History of "The Most…
LiteratureWatson, James D., 1928-Crick, Francis, 1916-2004Marine Biological Laboratory (Woods Hole, Mass.)DNA Replication
Karl Oskar Illmensee (1939–)
By: Cheryl Lancaster
| Published: Feb 26, 2017
Karl Oskar Illmensee studied the cloning and reproduction of fruit flies, mice, and humans in the US and Europe during the twentieth and twenty-first…
CloningMolecular CloningClone CellsTwinsEmbryos
Simon Edward Fisher (1970-)
By: Kat Fowler
| Published: Apr 27, 2017
Simon Edward Fisher studied the genes that control speech and language in England and the Netherlands in the late twentieth and early twenty-first…
GeneticsWellcome Trust Centre for Human Genetics (Oxford, England)Language AcquisitionTranscription factorsForkhead Transcription Factors
Harvey Leroy Karman (1924–2008)
By: Rainey Horwitz
| Published: Jul 18, 2017
Harvey Karman was an abortionist, inventor, and activist for safe abortion techniques in the US during the twentieth century. Karman developed the…
AbortionMenstrual regulationReproductive RightsLate-term abortionInternational Planned Parenthood Federation
Emil von Behring (1854–1917)
By: Maggie Zhou
| Published: Dec 01, 2022
Emil von Behring researched treatments for the common childhood disease diphtheria in Germany in the 1890s and early 1900s. Diphtheria is a lethal…
World War, 1914-1918Diphtheria ToxinDiphtheria AntitoxinDiphtheria--PreventionDiphtheria--Vaccination
"Ethical Issues in Human Stem Cell Research: Executive Summary" (1999), by the US National Bioethics Advisory Commission
By: Ceara O'Brien
| Published: Apr 01, 2014
Ethical Issues in Human Stem Cell Research: Executive Summary was published in September 1999 by The US National Bioethics Advisory Commission in…
LiteraturebioethicsStem cells--ResearchEmbryonic Stem CellsStem Cells
Stafford Leak Warren (1896–1981)
By: Meilin Zhu
| Published: Aug 30, 2017
Stafford Leak Warren studied nuclear medicine in the United States during the twentieth century. He used radiation to make images of the body for…
Warren, Stafford L. (Stafford Leak), 1896-1981RadiologyMedical radiologyRadiology--ResearchCancer--Interventional radiology