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Otto Mangold was an early twentieth century embryologist who specialized in the development of amphibian embryos. A major emphasis of his research…
PeopleOrganizers, EmbryonicBiographyAmphibiansGustav Jacob Born was an experimental embryologist whose original work with amphibians served as the platform for his wax-plate method of embryo…
PeopleTransplantationBiographyAmphibiansJohn Spangler Nicholas, an American biologist, was born on 10 March 1895 in Allegheny, Pennsylvania. He was the only child of Elizabeth Ellen…
PeopleBiographyMammalsAmphibians