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This image shows a chicken (Gallus gallus) embryo undergoing gastrulation in stage four (18-19 hrs after laying) according to the Hamburger-Hamilto
GastrulationBlastodermChickensEpiblastPrimitive StreakMother Teresa, a Roman Catholic nun known for her charitable work and attention to the poor, was born 26 August 1910. The youngest child of Albanian…
religionReproductionCatholicismContraceptionAbortionKnown for dropping a long-held distinction in the Catholic Church between the animated and unanimated fetus, Felice Peretti was born in Grottamare,…
PeoplereligionReproductionCatholicismPopes"Effraenatam," the brain-child of Pope Sixtus V, was released as a papal bull in the year 1588. Papal bulls are formal declarations issued by the…
LiteratureSixtus V, Pope, 1520-1590religionReproductionCatholicismDeveloping a codebook of definitions and exemplars of significant text segments and applying it to the collected data revealed several themes. For…
MenstruationMenstrual Hygiene ProductsReproductive HealthHealth educationMenstruation DisturbancesScience fiction works can reflect the relationship between science and society by telling stories that are set in the future of ethical implications…
Science FictionLiteratureScience in literaturePublicationsReproductionHaeckel believed that the development of an embryo revealed the adult stages of the organism’s ancestors. Haeckel represented this idea with drawings…
TextbooksEmbryosEmbryonic DevelopmentEmbryo DevelopmentPublicationsLeuprolide acetate, or leuprorelin, is a manufactured drug that has been prescribed as a treatment for endometriosis, a medical condition in which…
EndometriosisEndometriumDrug utilizationDrugs--AdministrationUterusThe Pfeffer Zelle (Pfeffer Cell Apparatus), invented by Wilhelm Pfeffer in 1877, measured the minimum pressure needed to prevent a pure solvent from…
TechnologyPlant cell membranesPlants--DevelopmentOsmosisMembranes (Technology)