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In the first decade of the twentieth century, Paul Kammerer, a zoologist working at the Vivarium in Vienna, Austria, conducted research on…
Kammerer, Paul, 1880-1926Midwife toadsKammerer, Paul, 1880-1926. Streitfrage der Vererbung erworbener Eigenschaften. EnglishInheritance of acquired charactersAdaptationIn 1974, Elizabeth Dexter Hay and Stephen Meier in the US conducted an experiment that demonstrated that the extracellular matrix, the mesh-like…
Extracellular matrixCollagenCorneaEpitheliumEmbryosResearchers Geoffrey Sher and Jeffrey Fisch gave Viagra, also known as sildenafil, to women undergoing fertility treatment to test whether the…
Fertility clinicsFertility, HumanHuman embryo--TransplantationEmbryo TransferSildenafil CitrateJacques Loeb developed procedures to make embryos from unfertilized sea urchin eggs in 1899. Loeb called the procedures "artificial parthenogenesis…
ParthenogenesisExperimentsSea UrchinsShoukhrat Mitalipov, Masahito Tachibana, and their team of researchers replaced the mitochondrial genes of primate embryonic stem cells via spindle…
monkeysrhesus macaqueSendai virusEmbryonic Stem CellsMitochondrial DiseasesIn 1935, George Beadle and Boris Ephrussi developed a technique to transplant optic discs between fruit fly larvae.
Fruit-fliesImaginal DisksGeneticsdevelopmentMetamorphosis, BiologicalAdvanced Cell Technology (ACT), a stem cell biotechnology company in Worcester, Massachusetts, showed the potential for cloning to contribute to…
Cell nuclei--TransplantationCloningGaurAdvanced Cell Technology (Firm)EmbryosHilde Proscholdt Mangold was a doctoral student at the Zoological Institute at the University of Freiburg in Freiburg, Germany, from 1920-1923.…
LiteratureEmbryosTrembley, Abraham, 1710-1784GastrulationEmbryologyAs mice embryos develop, they undergo a stage of development called gastrulation. The hallmark of vertebrate gastrulation is the reorganization of…
GastrulationMiceGerm CellsSomatic embryogenesisEmbryosIn 1952 Robert Briggs and Thomas J. King published their article, "Transplantation of Living Nuclei from Blastula Cells into Enucleated Frogs' Eggs…
Cell nuclei--TransplantationNuclear Transfer TechniquesExperimentsNuclear TransplantationTransplantation