an embryo floating on a blue background


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The Marine Biological Laboratory

By: Jane Maienschein | Published: Oct 24, 2008

The Marine Biological Laboratory (MBL) was founded in 1888 in Woods Hole, Massachusetts. Woods Hole was already the site for the government 's US…

Marine Biological Laboratory (Woods Hole, Mass.)OrganizationsEducationLaboratories

Osborne Overton Heard (1890-1983)

By: Karen Wellner | Published: Jun 28, 2010

Osborne O. Heard was a noted Carnegie embryological model maker for the Department of Embryology at The Carnegie Institute of Washington (CIW),…

PeopleCarnegie Institution of WashingtonBiographyModels

Gavin Rylands de Beer (1899-1972)

By: Megan Kearl | Published: Jun 02, 2010

Gavin de Beer was an English zoologist known for his contributions to evolution and embryology, in particular for showing the inadequacy of the germ…


Carnegie Stages

By: Karen Wellner | Published: Jul 17, 2009

Historically the exact age of human embryo specimens has long perplexed embryologists. With the menstrual history of the mother often unknown or not…

Mall, Franklin P. (Franklin Paine), 1862-1917Human DevelopmentCarnegie Institution of Washington

Dizhou Tong (1902-1979)

By: Yawen Zou | Published: Feb 18, 2014

Dizhou Tong, also called Ti Chou Tung, studied marine animals and helped introduce and organize experimental embryology in China during the twentieth…

Marine BiologyCell nuclei--TransplantationEmbryology, ExperimentalDevelopmental BiologyEmbryos

Possums (1952), by Carl G. Hartman

By: Gia Goodman, Karen Wellner | Published: Dec 02, 2013

Possums is a 174-page book consisting of a series of essays written about the Virginia opossum (Didelphis virginiana), the only living marsupial in…

LiteratureVirginia opossumEmbryologyMarsupialsNatural history

Nicolaas Hartsoeker (1656-1725)

By: Cera R. Lawrence | Published: Sep 26, 2008

Nicolaas Hartsoeker, a Dutch astronomer, optics manufacturer, and naturalist, was born 26 March 1656 in Gouda, Netherlands, and died 10 December 1725…

PeopleHartsoeker, Nicolas, 1656-1725SpermatozoaBiographySperm

On the Generation of Animals, by Aristotle

By: Cera R. Lawrence | Published: Oct 02, 2010

Aristotle's On the Generation of Animals is referred to in Latin as De Generatione animalium. As with many of Aristotle's writings, the exact date of…


Stazione Zoologica Anton Dohrn, Naples, Italy

By: Federica Turriziani Colonna | Published: Dec 22, 2014

The Stazione Zoologica Anton Dohrn (Anton Dohrn Zoological Station) is a public research institute focusing on biology and biodiversity. Hereafter…

OrganizationStazione zoologica di NapoliDevelopmental BiologyZoologyEmbryology

The Origin of Species: "Chapter Thirteen: Mutual Affinities of Organic Beings: Morphology: Embryology: Rudimentary Organs" (1859), by Charles R. Darwin

By: M. Elizabeth Barnes | Published: Jul 11, 2014

Mutual Affinities of Organic Beings: Morphology: Embryology: Rudimentary Organs is the thirteenth chapter of Charles Darwin's book The Origin of…

LiteratureEvolutionEvolution (Biology)Natural selectionEmbryology

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