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Leonard Hayflick (1928- )
By: Zane Bartlett
| Published: Jul 20, 2014
Leonard Hayflick studied the processes by which cells age during the twentieth and twenty-first centuries in the United States. In 1961 at the Wistar…
PeopleCellsCell populationsCell DeathApoptosis
Isotretinoin (Accutane) as a Teratogen
By: Chanapa Tantibanchachai
| Published: Jul 20, 2014
Isotretinoin is a molecule and a byproduct (metabolite) of vitamin A, and in greater than normal amounts in pregnant women, it can cause fetal…
Teratogenic agentsVitamin AIsotretinoinAbnormalities, HumanTeratogens
"Maternal Thyroid Deficiency During Pregnancy and Subsequent Neuropsychological Development of the Child" (1999), by James E. Haddow et al.
By: Jennifer R. Craer
| Published: Jul 11, 2014
From 1987 to the late 1990s, James Haddow and his team of researchers at the Foundation for Blood Research in Scarborough, Maine, studied children…
HypothyroidismCongenital HypothyroidismThyroid HormonesThyroid GlandThyrotropin
Mitochondrial Diseases in Humans
By: Dorothy R. Haskett
| Published: Jul 11, 2014
Mitochondrial diseases in humans result when the small organelles called mitochondria, which exist in all human cells, fail to function normally. The…
Mitochondrial pathologyMitochondriaCell organellesCell nuclei--TransplantationReproductive technology
The Origin of Species: "Chapter Thirteen: Mutual Affinities of Organic Beings: Morphology: Embryology: Rudimentary Organs" (1859), by Charles R. Darwin
By: M. Elizabeth Barnes
| Published: Jul 11, 2014
Mutual Affinities of Organic Beings: Morphology: Embryology: Rudimentary Organs is the thirteenth chapter of Charles Darwin's book The Origin of…
LiteratureEvolutionEvolution (Biology)Natural selectionEmbryology
Barbara McClintock (1902-1992)
By: Federica Turriziani Colonna
| Published: Jul 05, 2014
Barbara McClintock worked on genetics in corn (maize) plants and spent most of her life conducting research at the Cold Spring Harbor Laboratory in…
McClintock, Barbara, 1902-1992ChromosomesTransposonsCornDNA Transposable Elements
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
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
Beadle and Ephrussi's Transplantation Technique for Drosophila
By: Divyash Chhetri
| Published: Jun 29, 2014
Boris Ephrussi and George Wells Beadle developed a transplantation technique on flies, Drosophila melanogaster, which they described in their 1936…
TechnologyTissue ExtractsGenesTransplantation of organs, tissues, etc.Tissue Transplantation
Keith Henry Stockman Campbell (1954-2012)
By: Zane Bartlett
| Published: Jun 27, 2014
Keith Henry Stockman Campbell studied embryo growth and cell differentiation during the twentieth and twenty-first centuries in the UK. In 1995,…
Campbell, Keith, 1954-2012Wilmut, IanCloningStem CellsFibroblasts