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John Philip Trinkaus studied the processes of cell migration and gastrulation, especially in teleost fish, in the US during the twentieth century.…
PeopleGastrulationBiographyMorphogenesisHans Spemann was an experimental embryologist best known for his transplantation studies and as the originator of the "organizer" concept. One of his…
PeopleSpemann, Hans, 1869-1941TransplantationBiographyJohannes Holtfreter made important discoveries about the properties of the organizer discovered by Hans Spemann. Although he spent much time away…
Organizers, EmbryonicBiographyFrogsHilde Mangold, previously Hilde Proescholdt, was a German embryologist and physiologist who became well known for research completed with Hans…
Organizers, EmbryonicBiographydifferentiationAmphibiansJohn Spangler Nicholas, an American biologist, was born on 10 March 1895 in Allegheny, Pennsylvania. He was the only child of Elizabeth Ellen…
PeopleBiographyMammalsAmphibiansRobert William Briggs was a prolific developmental biologist. However, he is most identified with the first successful cloning of a frog by nuclear…
PeopleNuclear Transfer TechniquesNuclear TransplantationBiography