Filter my results
Search
Displaying 1291 - 1300 of 1376
Spemann-Mangold Organizer
By: Samuel Philbrick, Erica O'Neil
| Published: Jan 12, 2012
The Spemann-Mangold organizer, also known as the Spemann organizer, is a cluster of cells in the developing embryo of an amphibian that induces…
EmbryosAmphibiansSpemann, Hans, 1869-1941EmbryologyGastrulation
Buck v. Bell (1927)
By: Nathalie Antonios, Christina Raup
| Published: Jan 01, 2012
In 1927, the US Supreme Court case Buck v. Bell set the legal precedent that states may sterilize inmates of public institutions because the court…
LawEugenicsConstitutional courtsSterilization (Birth control)Involuntary Sterilization
Gastrulation in Gallus gallus (Domestic Chicken)
By: Corinne DeRuiter, Maria Doty
| Published: Jun 21, 2011
Gastrulation is an early stage in embryo development in which the blastula reorganizes into three germ layers: the ectoderm, the mesoderm, and the…
GastrulationChicks
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
Progestin: Synthetic Progesterone
By: Aliya Buttar, Sheraden Seward
| Published: Nov 17, 2008
Progestin is a synthetic form of progesterone, a naturally occurring hormone, which plays an important role in the female reproductive cycle. During…
TechnologyProgesteroneReproductionContraception
"Experiments on the Development of Chick and Duck Embryos, Cultivated in vitro" (1932), by Conrad Hal Waddington
By: Adam R. Navis
| Published: Nov 08, 2007
Conrad Hal Waddington's "Experiments on the Development of Chick and Duck Embryos, Cultivated in vitro," published in 1932 in Philosophical…
Waddington, C. H. (Conrad Hal), 1905-1975ExperimentsChicksDucks
Washington University in St. Louis
By: Adam R. Navis
| Published: Nov 08, 2007
Washington University in St. Louis served as the backdrop for many scientific discoveries, including that of nerve growth factor (NGF). Many of the…
OrganizationOrganizationsEducation
Joseph Needham (1900-1995)
By: Adam R. Navis
| Published: Nov 01, 2007
Joseph Needham was an embryologist and biochemist who is most noted in science for his studies on induction in developing embryos. Needham worked…
PeopleEmbryonic InductionBiography
Jane Marion Oppenheimer (1911-1966)
By: Kimberly A. Buettner
| Published: Nov 01, 2007
Jane Marion Oppenheimer, embryologist and historian of science and medicine, was born on 19 September 1911 in Philadelphia, Pennsylvania, to Sylvia…
PeopleBiographyEvolutionhistory
George Washington Corner (1889-1981)
By: Kimberly A. Buettner
| Published: Nov 01, 2007
As the third director of the Carnegie Institute of Washington s Department of Embryology, George Washington Corner made a number of contributions to…
PeopleBiographyCarnegie Institution of WashingtonEducation