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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
Nicole Le Douarin and Charles Ordahl's Experiments on the Developmental Lineages of Somites
By: Corinne DeRuiter
| Published: Jan 31, 2011
Through various studies developmental biologists have been able to determine that the muscles of the back, ribs, and limbs derive from somites.…
SomitesExperimentsSomatic cellsVertebrates
John Spangler Nicholas (1895-1963)
By: Ellen M. DuPont
| Published: Jul 23, 2008
John Spangler Nicholas, an American biologist, was born on 10 March 1895 in Allegheny, Pennsylvania. He was the only child of Elizabeth Ellen…
PeopleBiographyMammalsAmphibians
Bicoid
By: Jack Resnik
| Published: Jun 02, 2012
Bicoid is the protein product of a maternal-effect gene unique to flies of the genus Drosophila . In 1988 Christiane Nüsslein-Volhard identified…
Nüsslein-Volhard, C. (Christiane)EmbryosMorphogenesisTuring, Alan, 1912-1954Morgan, Thomas Hunt, 1866-1945
Effect of Prenatal Alcohol Exposure on Radial Glial Cells
By: Erica O'Neil
| Published: Oct 20, 2010
Prenatal alcohol (ethanol) exposure can have dramatic effects on the development of the central nervous system (CNS), including morphological…
fetal alcohol syndromeReproductionCongenital DisordersFetus
Robert William Briggs (1911-1983)
By: Adam R. Navis
| Published: Nov 08, 2007
Robert William Briggs was a prolific developmental biologist. However, he is most identified with the first successful cloning of a frog by nuclear…
PeopleNuclear Transfer TechniquesNuclear TransplantationBiography
Inducing Fertilization and Development in Sand Dollars
By: Karen Wellner
| Published: Jun 24, 2010
Sand dollars are common marine invertebrates in the phylum Echinodermata and share the same class (Echinoidea) as sea urchins. They have served as…
Sand DollarsFertilizationInvertebrates
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…
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