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Hans Spemann was an experimental embryologist best known for his transplantation studies and as the originator of the "organizer" concept. One of his…
PeopleSpemann, Hans, 1869-1941TransplantationBiographyEmbryonic differentiation is the process of development during which embryonic cells specialize and diverse tissue structures arise. Animals are made…
differentiationEric Wieschaus studied how genes cause fruit fly larvae to develop in the US and Europe during the twentieth and twenty-first centuries. Using the…
Drosophila melanogasterGeneticsGenetic ScreeningThe Spemann-Mangold organizer, also known as the Spemann organizer, is a cluster of cells in the developing embryo of an amphibian that induces…
EmbryosAmphibiansSpemann, Hans, 1869-1941EmbryologyGastrulationA node, or primitive knot, is an enlarged group of cells located in the anterior portion of the primitive streak in a developing gastrula. The node…
GastrulationChicksAlejandro Sánchez Alvarado's laboratory group has employed molecular tools to investigate old questions about regeneration and as a result have…
RegenerationExperimentsThe term morphogenesis generally refers to the processes by which order is created in the developing organism. This order is achieved as…
MorphogenesisdifferentiationConrad Hal Waddington's "Experiments on Embryonic Induction III," published in 1934 in the Journal of Experimental Biology, describes the discovery…
Waddington, C. H. (Conrad Hal), 1905-1975EmbryosCell differentiationEmbryologyChickens--EmbryosThe Edinburgh Mouse Atlas, also called the e-Mouse Atlas Project (EMAP), is an online resource comprised of the e-Mouse Atlas (EMA), a detailed…
TechnologyEmbryosDatabases, GeneticdevelopmentGene ExpressionJohn Spangler Nicholas, an American biologist, was born on 10 March 1895 in Allegheny, Pennsylvania. He was the only child of Elizabeth Ellen…
PeopleBiographyMammalsAmphibians