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Hensen's Node
By: Maria Doty, Corinne DeRuiter
| Published: Jun 21, 2011
A node, or primitive knot, is an enlarged group of cells located in the anterior portion of the primitive streak in a developing gastrula. The node…
GastrulationChicks
Robert Geoffrey Edwards (1925-2013)
By: Samuel Philbrick
| Published: Jun 20, 2011
Robert Geoffrey Edwards worked with Patrick Christopher Steptoe to develop in-vitro fertilization (IVF) techniques during the 1960s and 1970s in the…
PeopleFertilization in VitroReproductionBiographyFertilization
Nuclear Transplantation
By: Sean Cohmer
| Published: Jun 14, 2011
Nuclear transplantation is a method in which the nucleus of a donor cell is relocated to a target cell that has had its nucleus removed (enucleated…
Cell nuclei--TransplantationNuclear Transplantation
"Developmental Capacity of Nuclei Transplanted from Keratinized Skin Cells of Adult Frogs" (1975), by John Gurdon, Ronald Laskey, and O. Raymond Reeves
By: Sean Cohmer
| Published: Jun 14, 2011
In 1975 John Gurdon, Ronald Laskey, and O. Raymond Reeves published "Developmental Capacity of Nuclei Transplanted from Keratinized Skin Cells of…
Nuclear Transfer TechniquesExperimentsPublicationsFrogsNuclear Transplantation
August Antonius Rauber (1841-1917)
By: Maria Doty
| Published: Jun 10, 2011
August Antonius Rauber was an embryologist and anatomist who examined gastrulation in avian embryos. He examined the formation of the blastopore,…
PeopleGastrulationChicks
Hamburger-Hamilton Staging Series (1951)
By: Maria Doty
| Published: Jun 10, 2011
In 1951 Viktor Hamburger and Howard Hamilton created an embryonic staging series from a combination of photographs and drawings from other…
Chicks
The French Flag Model
By: Jack Resnik
| Published: May 19, 2011
The French flag model represents how embryonic cells receive and respond to genetic information and subsequently differentiate into patterns. Created…
ModelsGenetics
Robert Geoffrey Edwards and Patrick Christopher Steptoe's Clinical Research in Human in vitro Fertilization and Embryo Transfer, 1969-1980
By: Lijing Jiang
| Published: May 12, 2011
The biomedical accomplishment of human in vitro fertilization and embryo transfer (IVF-ET) took years to become the successful technique that…
ReproductionExperimentsFertilization
Charles Benedict Davenport (1866-1944)
By: Cera R. Lawrence
| Published: May 12, 2011
Charles Benedict Davenport was an early twentieth-century experimental zoologist. Davenport founded both the Station for Experimental Evolution and…
PeopleEugenicsReproductionZoologypublic health
The Baby Doe Rules (1984)
By: Jack Resnik
| Published: May 12, 2011
The Baby Doe Rules represent the first attempt by the US government to directly intervene in treatment options for neonates born with congenital…
LawCongenital, Hereditary, and Neonatal Diseases and AbnormalitiesReproductionCongenital Disorders