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George Wells Beadle (1903-1989)
By: Divyash Chhetri
| Published: Mar 14, 2014
George Wells Beadle studied corn, fruit flies, and funguses in the US during the twentieth century. These studies helped Beadle earn the 1958 Nobel…
Beadle, George Wells, 1903-1989Genetics
Frank Rattray Lillie's Study of Freemartins (1914-1920)
By: Mary Drago
| Published: Mar 14, 2014
Frank Rattray Lillie's research on freemartins from 1914 to 1920 in the US led to the theory that hormones partly caused for sex differentiation in…
Lillie, Frank Rattray, 1870-1947Intersexuality in animalsFreemartinismHormonesExperiments
The Singapore Bioethics Advisory Committee
By: Ceara O'Brien
| Published: Mar 14, 2014
Established in tandem with Singapore's national Biomedical Sciences Initiatives, the Bioethics Advisory Committee (BAC) was established by the…
OrganizationsSingaporeStem Cellsin vitroethics
"Cellular death in morphogenesis of the avian wing" (1962), by John W. Saunders Jr., et al.
By: Lijing Jiang
| Published: Mar 07, 2014
In the early 1960s, John W. Saunders Jr., Mary T. Gasseling, and Lilyan C. Saunders in the US investigated how cells die in the developing limbs of…
Cell DeathChickens--EmbryosApoptosisExperiments
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
Retinoids As Teratogens
By: Chanapa Tantibanchachai
| Published: Feb 28, 2014
Vitamin A (retinol) is an essential vitamin in the daily functioning of human beings that helps regulate cellular differentiation of epithelial…
RetinoidsVitamin A in the bodyTeratogenicity testingAbnormalities, HumanTeratogenic agents
"The Development of the Pronephros during the Embryonic and Early Larval Life of the Catfish
(Ictalurus punctatus)" (1932), by Rachel L. Carson
By: Karen Wellner
| Published: Feb 28, 2014
Rachel L. Carson studied biology at Johns Hopkins University in Maryland and graduated in 1933 with an MA upon the completion of her thesis, The…
LiteratureDevelopmental BiologyChannel CatfishEmbryosMorphogenesis
A Fate Map of the Chick Embryo
By: Chinami Michaels
| Published: Feb 26, 2014
A 3-D fate map of the chicken (Gallus gallus) embryo with the prospective point of ingression and yolk.
GastrulationBlastodermChickensEpiblastPrimitive Streak
The Blastoderm in Chicks During Early Gastrulation
By: Chinami Michaels
| Published: Feb 26, 2014
This image shows a chicken (Gallus gallus) embryo undergoing gastrulation in stage four (18-19 hrs after laying) according to the Hamburger-Hamilto
GastrulationBlastodermChickensEpiblastPrimitive Streak
Carl Richard Moore (1892-1955)
By: Mary Drago
| Published: Feb 18, 2014
Carl Richard Moore was a professor and researcher at the University of Chicago in Chicago, Illinois who studied sex hormones in animals from 1916…
Moore, Carl R. (Carl Richard), 1892-1955Intersexuality in animalsIntersex peopleHormones, SexSex Differentiation