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In 1963, Roman Catholic fertility doctor John Rock published The Time Has Come: A Catholic Doctor's Proposals to End the Battle over Birth Control, a…
LiteratureContraceptionPublicationsreligionReproductionAlejandro Sánchez Alvarado is a Professor of Neurobiology and Anatomy at the University of Utah School of Medicine and is also a Howard Hughes…
PeopleSánchez Alvarado, AlejandroRegenerationBiographyIn 1991, Hugo de Garis' article "Genetic Programming: Artificial Nervous Systems, Artificial Embryos and Embryological Electronics" was published in…
LiteraturePublicationsJacques Loeb developed procedures to make embryos from unfertilized sea urchin eggs in 1899. Loeb called the procedures "artificial parthenogenesis…
ParthenogenesisExperimentsSea UrchinsJulius von Sachs helped establish plant physiology through his experiments in latter nineteenth-century Germany. Sachs infused the inchoate…
Plant Physiological PhenomenaBiographyPlant physiologySergio Cereceda Stone was born 16 April 1942 in the coastal city of Valparaiso, Chile. Stone's mother Luz was a housewife and caretaker for Sergio…
PeopleFertilityethicsReproductionBiographyOtto Mangold was an early twentieth century embryologist who specialized in the development of amphibian embryos. A major emphasis of his research…
PeopleOrganizers, EmbryonicBiographyAmphibiansGavin de Beer was an English zoologist known for his contributions to evolution and embryology, in particular for showing the inadequacy of the germ…
PeopleBiographyEvolutionZoologyJohn Philip Trinkaus studied the processes of cell migration and gastrulation, especially in teleost fish, in the US during the twentieth century.…
PeopleGastrulationBiographyMorphogenesisMany difficulties can arise with a pregnancy even after the sperm successfully fertilizes the oocyte. A major problem occurs if the fertilized egg…
Ectopic PregnancyPregnancy, EctopicReproductionHuman Developmentmedicine