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Abraham Trembley (1710-1784)
By: Mary E. Sunderland
| Published: Oct 31, 2007
Abraham Trembley's discovery of the remarkable regenerative capacity of the hydra caused many to question their beliefs about the generation of…
PeopleRegenerationBiographyHydra
Charles Manning Child (1869-1954)
By: Mary E. Sunderland
| Published: Oct 23, 2007
Born in Ypsilanti, Michigan, on 2 February 1869, Charles Manning Child was the only surviving child of Mary Elizabeth and Charles Chauncey Child, a…
Polarity (Biology)Life cycles (Biology)MetabolismPhysiologyBiography
Role of Sonic Hedgehog (Shh) in Alcohol-Induced Craniofacial Abnormalities
By: Erica O'Neil
| Published: Oct 20, 2010
Prenatal exposure to alcohol (ethanol) results in a continuum of physical and neurological developmental abnormalities that vary depending on the…
fetal alcohol syndromeCongenital DisordersFetus
Marie Stopes International
By: Ellen M. DuPont
| Published: Jul 22, 2008
Marie Stopes International (MSI) is a not-for-profit organization based in the United Kingdom that promotes reproductive and sexual health. It grew…
Organizationpublic healthOrganizationsReproductionReproductive Rights
Genome-Wide Association Study (GWAS)
By: Matthew Tontonoz
| Published: Aug 10, 2025
A genome-wide association study, or GWAS, is a method for identifying variations in DNA that may contribute to the development of a particular trait…
Genome-Wide Association StudyGWA StudyGenome Wide Association AnalysisGenetic Linkage AnalysisPolymorphism, Restriction Fragment Length
Ilya Ilyich Mechnikov (Élie Metchnikoff) (1845-1916)
By: Valerie Racine
| Published: Jul 05, 2014
Ilya Ilyich Mechnikov studied phagocytes, immune function, and starfish embryos in Europe during the late nineteenth and early twentieth centuries.…
PhagocytesEmbryology, ExperimentalPhagocytosisEmbryologyImmunology
US Regulatory Response to Thalidomide (1950-2000)
By: Chanapa Tantibanchachai
| Published: Apr 01, 2014
Thalidomide, a drug capable of causing fetal abnormalities (teratogen), has caused greater than ten thousand birth defects worldwide since its…
ContextThalidomideThalidomide--Side effectsTeratogenicity testingMultiple Myeloma
Endoderm
By: Kate MacCord
| Published: Nov 17, 2013
Endoderm is one of the germ layers-- aggregates of cells that organize early during embryonic life and from which all organs and tissues develop.…
GastrulationEmbryosEmbryologyCellsTissues
The Notch Signaling Pathway in Embryogenesis
By: Justin Wolter
| Published: Mar 06, 2013
The Notch signaling pathway is a mechanism in animals by which adjacent cells communicate with each other, conveying spatial information and genetic…
EmbryologyDevelopmental BiologyEmbryosCell differentiationNotch genes
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