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Gunther von Hagens (1945- )
By: Britta Martinez
| Published: Oct 10, 2012
Gunther von Hagens invented a plastination technique and created Body Worlds, a traveling exhibit that has made anatomy part of the public domain.…
PlastinationHuman bodyAnatomical museumsHuman AnatomyEmbryos
Gastrulation in Gallus gallus (Domestic Chicken)
By: Corinne DeRuiter, Maria Doty
| Published: Jun 21, 2011
Gastrulation is an early stage in embryo development in which the blastula reorganizes into three germ layers: the ectoderm, the mesoderm, and the…
GastrulationChicks
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
Epithelium
By: Kate MacCord
| Published: Oct 17, 2012
Frederik Ruysch, working in the Netherlands, introduced the term epithelia in the third volume of his Thesaurus Anatomicus in 1703. Ruysch created…
EpitheliumRuysch, Frederik, 1638-1731AnatomyCells--MorphologyHis, Wilhelm, 1831-1904
Father Frank Pavone (1959- )
By: Katherine Brind'Amour
| Published: Feb 29, 2008
Father Frank Pavone, a key proponent of the Roman Catholic Church's pro-life movement, has devoted his life's work to ending abortion, euthanasia,…
PeoplereligionReproductionBiographyCatholicism
"Contributions to the Development of the Embryo. On the Artificial Production of One of the First Two Blastomeres, and the Later Development (Postgeneration) of the Missing Half of the Body" (1888), by Wilhelm Roux
By: Megan Kearl
| Published: Jul 20, 2009
Wilhelm Roux was an influential figure in the early history of experimental embryology. Although he originally studied medicine, he was invited to be…
LiteratureRoux, Wilhelm, 1850-1924ExperimentsFrogsOva
Homeobox Genes and the Homeobox
By: Brad Jacobson
| Published: Oct 11, 2010
Homeobox genes are a cluster of regulatory genes that are spatially and temporally expressed during early embryological development. They are…
Homeobox genesGenes, HomeoboxGenetics
Preimplantation Genetic Diagnosis
By: Nathalie Antonios
| Published: Mar 24, 2011
Preimplantation genetic diagnosis (PGD) involves testing for specific genetic conditions prior to the implantation of an embryo in the uterine wall.…
TechnologyPreimplantation DiagnosisReproductionFertilizationgenetic testing
Interspecies SCNT-derived Humanesque Blastocysts
By: Sarah Taddeo, Jason S. Robert, Nicole Diehnelt
| Published: Jun 23, 2017
Since the 1950s, scientists have developed interspecies blastocysts in laboratory settings, but not until the 1990s did proposals emerge to engineer…
BlastocystDiseasesbioethicsTadpoleCell nuclei--Transplantation
"The Developmental Capacity of Nuclei Taken from Intestinal Epithelium Cells of Feeding Tadpoles" (1962), by John B. Gurdon
By: Giselle Lee
| Published: Mar 16, 2017
In 1962 researcher John Bertrand Gurdon at the University of Oxford in Oxford, England, conducted a series of experiments on the developmental…
Cell nuclei--TransplantationGenetic EngineeringNuclear TransplantationUniversity College (University of Oxford)Xenopus laevis