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In 1934 a fourteen-day-old embryo was discovered during a postmortem examination and became famous for being the youngest known human embryo specimen…
ReproductionSpecimensHuman DevelopmentLennart Nilsson is a world-renowned photojournalist recognized for his exploratory images of the inside of the human body. Throughout his career,…
PeopleReproductionBiographyHuman DevelopmentMorphologyMany 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 DevelopmentmedicineOvum Humanum was written and compiled by Dr. Landrum Brewer Shettles while he worked as a doctor in New York. The publication contains an atlas of…
LiteraturePublicationsReproductionHuman DevelopmentOvaHistorically the exact age of human embryo specimens has long perplexed embryologists. With the menstrual history of the mother often unknown or not…
Mall, Franklin P. (Franklin Paine), 1862-1917Human DevelopmentCarnegie Institution of WashingtonAmong 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 DevelopmentPublicationsFetusLeonardo da Vinci's embryological drawings of the fetus in the womb and his accompanying observational annotations are found in the third volume of…
LiteratureHuman DevelopmentFetusAmong 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 DevelopmentPublicationsFetusWidely known as a key contributor to the Roman Catholic Church's body of doctrine, St. Thomas Aquinas also published an opinion on the moral status…
religionCatholicismFetusHuman DevelopmentAlthough the concept of quickening was not developed initially by the Roman Catholic Church, much of their histories are intertwined. Quickening, the…
Human DevelopmentreligionFetusAbortionCatholicism