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Early in the process of development, vertebrate embryos develop a fold on the neural plate where the neural and epidermal ectoderms meet, called the…
VertebratesdevelopmentGerm LayersNeural CrestNeural Crest CellsThe hedgehog signaling pathway is a mechanism that regulates cell growth and differentiation during embryonic development, called embryogenesis, in…
Drosophila melanogasterCyclopiaGenetic regulationZebra danioGenesThe hedgehog signaling pathway is a mechanism that directs the development of embryonic cells in animals, from invertebrates to vertebrates. The…
EmbryologyEmbryosWieschaus, Eric F.Cellular signal transductionDrosophila melanogasterNeurocristopathies are a class of pathologies in vertebrates, including humans, that result from abnormal expression, migration, differentiation, or…
CellsVertebratesdevelopmentCleft PalateAlbinismThrough various studies developmental biologists have been able to determine that the muscles of the back, ribs, and limbs derive from somites.…
SomitesExperimentsSomatic cellsVertebratesThe review article “Cell Deaths in Normal Vertebrate Ontogeny” (abbreviated as “Cell Deaths”) was published in Biological Reviews of the Cambridge…
LiteratureCell DeathPublicationsVertebratesOntogenyA germ layer is a group of cells in an embryo that interact with each other as the embryo develops and contribute to the formation of all organs and…
GastrulationEmbryologyCell differentiationEmbryosCellsEtienne Geoffroy Saint-Hilaire, commonly known as Geoffroy, studied animals, their anatomy and their embryos, and teratogens at the National Museum…
Geoffroy Saint-Hilaire, Etienne, 1772-1844TeratologyZoologyFrench RevolutionHomology theoryMesoderm is one of the three germ layers, groups of cells that interact early during the embryonic life of animals and from which organs and tissues…
MesodermGastrulationCell differentiationCellsTissuesEndoderm is one of the germ layers-- aggregates of cells that organize early during embryonic life and from which all organs and tissues develop.…
GastrulationEmbryosEmbryologyCellsTissues