Filter my results
Search
Displaying 101 - 110 of 306
Hans Spemann (1869-1941)
By: Karen Wellner
| Published: Jun 15, 2010
Hans Spemann was an experimental embryologist best known for his transplantation studies and as the originator of the "organizer" concept. One of his…
PeopleSpemann, Hans, 1869-1941TransplantationBiography
James G. Wilson's Six Principles of Teratology
By: S. Alexandra Aston
| Published: May 23, 2014
James Graves Wilson's six principles of teratology, published in 1959, guide research on teratogenic agents and their effects on developing organisms…
TeratologyAbnormalities, HumanCongenital AbnormalitiesBirth DefectsCongenital Defects
Carl Gottfried Hartman (1879-1968)
By: Giavonna A. Goodman
| Published: Nov 01, 2011
Carl Gottfried Hartman researched the reproductive physiology of opossums and rhesus monkeys. He was the first to extensively study the embryology…
PeopleReproductionBiographyOpossumsmonkeys
Jacques Loeb (1859-1924)
By: Steve Elliott
| Published: Jun 10, 2009
Jacques Loeb experimented on embryos in Europe and the United States at the end of the nineteenth and beginning of the twentieth centuries. Among…
PeopleParthenogenesisBiography
Spermism
By: Cera R. Lawrence
| Published: Aug 13, 2008
Spermism was one of two models of preformationism, a theory of embryo generation prevalent in the late seventeenth through the end of the eighteenth…
SpermatozoaSpermOva
Edward Stuart Russell (1887-1954)
By: Mark A. Ulett
| Published: Jun 29, 2010
Edward Stuart Russell was born 23 March 1887 to Helen Cockburn Young and the Reverend John N. Russell in Port Glasgow, Scotland. Friends and co-…
PeopleBiographyMorphologyhistoryphilosophy
Matthias Jacob Schleiden (1804–1881)
By: Sara Parker
| Published: May 29, 2017
Matthias Jacob Schleiden helped develop the cell theory in Germany during the nineteenth century. Schleiden studied cells as the common element among…
Cell BiologyBotanyEpigenesisEmbryologyBiology, Experimental
Preformationism in the Enlightenment
By: Cera R. Lawrence
| Published: Aug 11, 2008
Preformationism was a theory of embryological development used in the late seventeenth through the late eighteenth centuries. This theory held that…
OvaSperm
Ziegler Wax Embryo Models
By: Karen Wellner
| Published: Jun 15, 2010
Three-dimensional anatomical models have long been essential to the learning of science and lend a sense of "control" to those practicing in the…
TechnologyReproductionModelsAnatomy
John Tyler Bonner (1920- )
By: Mary E. Sunderland
| Published: May 09, 2008
The establishment and growth of developmental-evolutionary biology owes a great debt to the work of John Tyler Bonner. Bonner's studies of cellular…
PeopleDictyosteliidaBiographyMorphogenesisMulticellularity