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The Development of the Neural Crest and the Migration of Neural Crest Cells (NCCs) in the Embryos of Various Vertebrates
By: Brian K. Hall
| Published: Aug 21, 2014
This diagram shows how NCCs migrate differently in rats, birds and amphibians.
Neural CrestEmbryosVertebratesGerm LayersEctoderm
Mechanism of Notch Signaling
By: Cheryl Lancaster
| Published: Aug 21, 2014
Mechanism of Notch Signaling: The image depicts a type of cell signaling, in which two animal cells interact and transmit a molecular signal from o
Notch genesNotch ProteinsCellular control mechanismsdelta proteinSignal Pathways
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
The Pasteur Institute (1887- )
By: Valerie Racine
| Published: Aug 19, 2014
L'Institut Pasteur (The Pasteur Institute) is a non-profit private research institution founded by Louis Pasteur on 4 June 1887 in Paris, France. The…
OrganizationBacteriaGenetic regulationOperonsMolecular genetics
"Human Factor IX Transgenic Sheep Produced by Transfer of Nuclei from Transfected Fetal Fibroblasts" (1997), by Angelika E. Schnieke, et al.
By: Zane Bartlett
| Published: Aug 19, 2014
In the 1990s, researchers working at the Roslin Institute in Edinburgh, Scotland, performed cloning experiments in collaboration with PPL…
CloningChristmas FactorBlood coagulation factor IXRoslin InstituteWilmut, Ian
Early Infantile Autism and the Refrigerator Mother Theory (1943-1970)
By: Sean Cohmer
| Published: Aug 19, 2014
In 1943, child psychiatrist Leo Kanner in the US gave the first account of Early Infantile Autism that encouraged psychiatrists to investigate what…
ContextKanner, Leo, 1894-1981AutismAutism spectrum disordersAutism in children
David Wildt's Evolving Ethics Concerning the Roles of Wildlife Reproductive Sciences in Species Conservation
By: Caroline Appleton
| Published: Aug 18, 2014
David Wildt is an animal reproductive biologist who directs the Conservation Biology Institute in Fort Royal, Virginia. In 1986, Wildt argued that…
ethicsFertilization in VitroEmbryo transplantationReproductive technologyEndangered Species
Ooplasmic Transfer Technology
By: Dorothy R. Haskett
| Published: Aug 18, 2014
Ooplasmic transfer, also called cytoplasmic transfer, is an outside the body, in vitro fertilization (IVF) technique. Ooplasmic transfer in humans (…
TechnologyFertilization in vitro, HumanFertilization in Vitro
Robert Geoffrey Edwards's Study of in vitro Mammalian Oocyte Maturation, 1960 to 1965
By: Lijing Jiang
| Published: Aug 18, 2014
In a series of experiments between 1960 and 1965, Robert Geoffrey Edwards discovered how to make mammalian egg cells, or oocytes, mature outside of a…
Edwards, R. G. (Robert Geoffrey), 1925-2013Fertilization in VitroIn Vitro Oocyte Maturation TechniquesOocytesLuteinizing Hormone
Angelman Syndrome
By: Jonathan North
| Published: Aug 12, 2014
Angelman syndrome is a disorder in humans that causes neurological symptoms such as lack of speech, jerky movements, and insomnia. A human cell has…
Angelman syndromeGenomic imprintingHuman chromosome 15--AbnormalitiesHuman chromosome 15Happy Puppet Syndrome