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Throughout history many different methods have been devised for the early detection of pregnancy. From the time of the Ancient Egyptians, inspection…
Pregnancy TestsReproductionFertilityJan Evangelista Purkyne, also called Johannes or Johann Evangelist Purkinje, studied cells in the cerebellum, fibers of the heart, subjective visual…
Purkinje CellsPurkinje FibersOocytesIn "Versuche zur Analyse der Induktionsmittel in der Embryonalentwicklung," published in Naturwissenschaften in 1932, Hermann Bautzmann, Johannes…
Organizers, EmbryonicExperimentsTransplantationThe National Association for Down Syndrome, or NADS, is an organization that was founded in 1960 by Kathryn McGee in Chicago, Illinois, to support…
OrganizationDown syndromeChildren with Down syndromeMothers of children with Down syndromeDown syndrome--Patients--BiographyEnovid was the first hormonal birth control pill. G. D. Searle and Company began marketing Enovid as a contraceptive in 1960. The technology was…
TechnologyContraceptionReproductionReproductive RightsNicole Marthe Le Douarin was one of the first progressive female pioneers of developmental and embryological research. Some of her most notable and…
PeopleBiographyChicksBirdsSt. George Jackson Mivart studied animals and worked in England during the nineteenth century. He also proposed a theory of organismal development…
EvolutionJacques Loeb broadened and corrected his earlier claims concerning artificial parthenogenesis in sea urchins in a series of experiments in 1900. He…
ParthenogenesisExperimentsSea UrchinsAmong his myriad scientific and artistic contributions, Leonardo da Vinci's work in embryology was groundbreaking. He observed and diagramed the…
LiteratureLeonardo, da Vinci, 1452-1519Human DevelopmentPublicationsFetusThe hanging drop tissue culture is a technique utilized in embryology and other fields to allow growth that would otherwise be restricted by the flat…
TechnologyTissue cultureTissue Culture Techniques