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Apoptosis in Embryonic Development
By: Zane Bartlett
| Published: Jun 08, 2017
Apoptosis, or programmed cell death, is a mechanism in embryonic development that occurs naturally in organisms. Apoptosis is a different process…
ApoptosisGenetic regulationCaenorhabditis elegansCellsGerm Cells
Wolbachia
By: Karine Prevot
| Published: Jan 29, 2015
Bacteria of the genus Wolbachia are bacteria that live within the cells of their hosts. They infect a wide range of arthropods (insects, arachnids…
WolbachiaBacteriaHost-bacteria relationshipsHost-parasite relationshipsArthropods
Studies of Thalidomide's Effects on Rodent Embryos from 1962-2008
By: Joanna Yang, Chanapa Tantibanchachai
| Published: Mar 07, 2014
Thalidomide is a sedative drug introduced to European markets on 1 October 1957 after extensive testing on rodent embryos to ensure its safety. Early…
ContextTeratogenicity testingAbnormalities, HumanThalidomide--Side effectsThalidomide
Intraspecies Chimeras Produced in Laboratory Settings (1960-1975)
By: Sarah Taddeo
| Published: Nov 25, 2014
When cells-but not DNA-from two or more genetically distinct individuals combine to form a new individual, the result is called a chimera. Though…
ContextChimerismEmbryosEmbryonic Stem CellsMosaicism
Mitochondria
By: Dorothy R. Haskett
| Published: Jul 05, 2014
All cells that have a nucleus, including plant, animal, fungal cells, and most single-celled protists, also have mitochondria. Mitochondria are…
CellsCell organellesMitochondriaPlant mitochondriaEndosymbiosis
“The Science and Ethics of Making Part-Human Animals in Stem Cell Biology” (2006), by Jason Scott Robert
By: Alexis Darby
| Published: May 25, 2021
In 2006, bioethicist Jason Scott Robert published “The Science and Ethics of Making Part-Human Animals in Stem Cell Biology” in The FASEB Journal.…
LiteratureGeneticsbioethicsStem Cell ResearchStem Cells
Lysogenic Bacteria as an Experimental Model at the Pasteur Institute (1915-1965)
By: Valerie Racine
| Published: Oct 10, 2014
Lysogenic bacteria, or virus-infected bacteria, were the primary experimental models used by scientists working in the laboratories of the Pasteur…
ContextInstitut Pasteur (Paris, France)BacteriaEscherichia coliMonod, Jacques
"How do Embryos Assess Risk? Vibrational Cues in Predator-Induced Hatching of Red-Eyed Treefrogs" (2005), by Karen Warkentin
By: Karla T. Moeller
| Published: Apr 07, 2012
In 'How do Embryos Assess Risk? Vibrational Cues in Predator-Induced Hatching of Red-Eyed Treefrogs' (2005), Karen Warkentin reported on experiments…
EmbryosRed-eyed treefrogPredation (Biology)Science experimentsAmphibians--Eggs
The Southern Gastric-Brooding Frog
By: Christopher Rojas
| Published: Jan 26, 2015
The Southern Gastric-Brooding Frog (Rheobatrachus silus) was an aquatic frog that lived in south-east Australia. In 2002, the International Union…
Sexual behavior in animalsReproductive BehaviorExtinction (Biology)Extinct animalsCloning
Study of Fossilized Massospondylus Dinosaur Embryos from South Africa (1978-2012)
By: Madison Paige
| Published: Mar 31, 2015
In 1978, James Kitching discovered two dinosaur embryos in a road-cut talus at Roodraai (Red Bend) in Golden Gate Highlands National Park, South…
ContextDinosaursDinosaurs--EggsMassospondylus carinatusMassospondylus