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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
Johannes Holtfreter (1901-1992)
By: Adam R. Navis
| Published: Feb 29, 2008
Johannes Holtfreter made important discoveries about the properties of the organizer discovered by Hans Spemann. Although he spent much time away…
Organizers, EmbryonicBiographyFrogs
"On the Induction of Embryonic Primordia by Implantation of Organizers from Different Species" (1924), Hilde Mangold's Dissertation
By: Megan Kearl, Kate MacCord
| Published: Dec 19, 2012
Hilde Proscholdt Mangold was a doctoral student at the Zoological Institute at the University of Freiburg in Freiburg, Germany, from 1920-1923.…
LiteratureEmbryosTrembley, Abraham, 1710-1784GastrulationEmbryology
Organisers and Genes (1940), by Conrad Hal Waddington
By: Adam R. Navis
| Published: Oct 30, 2007
Conrad Hal Waddington's Organisers and Genes, published in 1940, is a summary of available research and theoretical framework for many concepts…
LiteratureOrganizers, EmbryonicPublicationsdifferentiation
"Experiments on Embryonic Induction III. A Note on Inductions by Chick Primitive Streak Transplanted to the Rabbit Embryo" (1934), by Conrad Hal Waddington
By: Adam R. Navis
| Published: Oct 30, 2007
Conrad Hal Waddington's "Experiments on Embryonic Induction III," published in 1934 in the Journal of Experimental Biology, describes the discovery…
Waddington, C. H. (Conrad Hal), 1905-1975EmbryosCell differentiationEmbryologyChickens--Embryos
"Versuche zur Analyse der Induktionsmittel in der Embryonalentwicklung" (1932), by Hermann Bautzmann, Johannes Holtfreter, Otto Mangold, and Hans Spemann
By: Adam R. Navis
| Published: Nov 13, 2007
In "Versuche zur Analyse der Induktionsmittel in der Embryonalentwicklung," published in Naturwissenschaften in 1932, Hermann Bautzmann, Johannes…
Organizers, EmbryonicExperimentsTransplantation
Otto Mangold (1891-1962)
By: Megan Kearl
| Published: Jun 02, 2010
Otto Mangold was an early twentieth century embryologist who specialized in the development of amphibian embryos. A major emphasis of his research…
PeopleOrganizers, EmbryonicBiographyAmphibians
Hilde Mangold (1898-1924)
By: Maria Doty
| Published: May 09, 2011
Hilde Mangold, previously Hilde Proescholdt, was a German embryologist and physiologist who became well known for research completed with Hans…
Organizers, EmbryonicBiographydifferentiationAmphibians