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Kurt Benirschke (1924-)
By: Karen Love
| Published: Apr 26, 2016
Kurt Benirschke studied cells, placentas, and endangered species in Germany and the US during the twentieth century. Benirschke was professor at the…
Developmental BiologyGeneticsEndangered SpeciesGene librariesEmbryology
Adolescent Family Life Act (1981)
By: Rohini Nott
| Published: Oct 21, 2020
The 1981 Adolescent Family Life Act, or AFLA, is a US federal law that provides federal funding to public and nonprofit private organizations to…
Sexual AbstinenceSexual abstinence--Religious aspects--Catholic ChurchSexual abstinence--Religious aspectsSexual abstinence--Religious aspects--ChristianityChurch schools--Law and legislation--United States
Ernest John Christopher Polge (1926-2006)
By: Bailey Renee
| Published: Jan 30, 2018
Twentieth-century researcher Ernest John Christopher Polge studied the reproductive processes of livestock and determined a method to successfully…
Smith, Audrey U.Parkes, A. S. (Alan Sterling), 1900-1990National Institute for Medical Research (Great Britain)Medical Research Council (Great Britain)Glycerin
Conrad Hal Waddington (1905-1975)
By: Adam R. Navis
| Published: Nov 08, 2007
Conrad Hal Waddington was an embryologist and theoretical biologist. His early experimental work investigated aspects of embryonic induction and the…
EpigenomicsEpigeneticsBiography
Leo Kanner (1894-1981)
By: Sean Cohmer
| Published: Apr 30, 2014
Leo Kanner studied and described early infantile autism in humans in the US during the twentieth century. Though Eugen Bleuler first coined the term…
AutismAutism in children
Dissertation: Degeneration in Miniature: History of Cell Death and Aging Research in the Twentieth Century
By: Lijing Jiang
| Published: Nov 17, 2020
Once perceived as an unimportant occurrence in living organisms, cell degeneration was reconfigured as an important biological phenomenon in…
Cell DeathCells--AgingCaenorhabditis elegansAging, CellCellular Aging
The First Successful Cloning of a Gaur (2000), by Advanced Cell Technology - Image
By: Katherine Koczwara
| Published: Jun 11, 2019
The first successful cloning of a gaur in 2000 by Advanced Cell Technology involved the cells of two animals: an egg cell from a domestic cow and a
GaurCloningCattle--CloningExperimentsOrganisms
Experiments on the Reproductive Costs of a Pure Capital Breeder, the Children’s Python (Antaresia childreni) (2013), by Olivier Lourdais, Sophie Lorioux, and Dale F. DeNardo
By: Brittany Kaminsky
| Published: Jan 03, 2018
In 2013, Olivier Lourdais, Sophie Lorioux, and Dale DeNardo conducted a study on the impact of the reproductive effort on the muscle size and the…
Snakes--PhysiologyPythonsVitellogenesisSnakes--ReproductionEggs--Incubation
Camillo Golgi's Black Reaction for Staining Neurons
By: Isra Mishqat
| Published: May 26, 2017
In 1873 Italy, Camillo Golgi created the black reaction technique, which enabled scientists to stain and view the structure of neurons, the…
TechnologyNeuronsAxonsDendritesSilver Nitrate
Some of the Cells that Arise from Animal Gastrulas with Three Germ Layers
By: Chinami Michaels
| Published: Aug 21, 2014
From a developing embryos three primary germ layers, ectoderm (green), mesoderm (pink) and endoderm (yellow), a variety of differentiated cell type
MesodermGastrulationBlastulaGerm LayersEctoderm