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Robert Lanza (1956- )
By: Christopher Rojas
| Published: Feb 11, 2015
During the twentieth and twenty-first centuries, Robert Paul Lanza studied embryonic stem cells, tissues, and endangered species as chief scientific…
Advanced Cell Technology (Firm)BantengCloningEmbryosEmbryonic Stem Cells
Barack Obama Executive Order 13505, November 2008
By: Aroob Khokhar
| Published: Jun 17, 2010
On 20 November 2009 Democrat Barack Obama replaced Republican George W. Bush as president of the United States. Obama soon initiated changes to Bush'…
LawStem Cells
Martin John Evans (1941– )
By: Alexander Sastokas
| Published: Aug 05, 2025
Sir Martin John Evans researched developmental biology in the United Kingdom during the twentieth and early twenty-first centuries. He was among the…
Knockout MiceStem Cell ResearchDevelopmental BiologyP53 geneNobel Prize winners
Mesenchyme
By: Kate MacCord
| Published: Sep 14, 2012
Mesenchyme is a type of animal tissue comprised of loose cells embedded in a mesh of proteins and fluid, called the extracellular matrix. The loose,…
MesenchymeGastrulationStem CellsMesenchymal Stem CellsEmbryology
Intraspecies Chimeras Produced in Laboratory Settings (1960-1975)
By: Sarah Taddeo
| Published: Nov 25, 2014
When cells-but not DNA-from two or more genetically distinct individuals combine to form a new individual, the result is called a chimera. Though…
ContextChimerismEmbryosEmbryonic Stem CellsMosaicism
Interspecies SCNT-derived Humanesque Blastocysts
By: Sarah Taddeo, Jason S. Robert, Nicole Diehnelt
| Published: Jun 23, 2017
Since the 1950s, scientists have developed interspecies blastocysts in laboratory settings, but not until the 1990s did proposals emerge to engineer…
BlastocystDiseasesbioethicsTadpoleCell nuclei--Transplantation
Alan Osborne Trounson (1946– )
By: Whitney Alexandra Tuoti
| Published: Aug 01, 2024
Alan Osborne Trounson is a scientist from Australia who studies embryology and stem cells. His research has improved the success rates of in vitro…
Fertilization in VitroFertilizations in VitroIn vitro fertilizationTest-Tube FertilizationIn Vitro Techniques
California Proposition 71 (2004)
By: Ceara O'Brien
| Published: Apr 03, 2014
The California Stem Cell Research and Cures Act, also called Proposition 71, was a ballot initiative proposed by California voters in 2004 to…
LawStem cells--Research--Religious aspects--ChristianityStem cells--Research--Moral and ethical aspectsEmbryonic stem cells--Research--Law and legislationEmbryo Research
John D. Gearhart
By: Ke Wu
| Published: Jan 19, 2011
John D. Gearhart is a renowned American developmental geneticist best known for leading the Johns Hopkins University research team that first…
PeopleStem CellsGeneticsBiography
The US President's Council on Bioethics (2001-2009)
By: Ceara O'Brien
| Published: Feb 18, 2014
The US President's Council on Bioethics was an organization headquartered in Washington D.C. that was chartered to advise then US President George W…
OrganizationbioethicsAdvisory boardsStem CellsEmbryonic Stem Cells