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Many 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 DevelopmentmedicineThis video is composed of a sequence of films created by John Tyler Bonner in the 1940s to show the life cycle of the cellular slime mold…
DictyosteliidaMoviesFrom 1993 to 1995 researchers led by Robert J. Berry from the US Centers for Disease Control headquartered in Atlanta, Georgia, and Zhu Li from…
Center for Disease ControlFolic AcidFolic Acid DeficiencyFolic acid in human nutritionNeural tube--AbnormalitiesDuring the twentieth and twenty-first centuries, Robert Paul Lanza studied embryonic stem cells, tissues, and endangered species as chief scientific…
Advanced Cell Technology (Firm)BantengCloningEmbryosEmbryonic Stem CellsDorothy Andersen studied cystic fibrosis in the United States during the early 1900s. In 1935, Andersen discovered lesions in the pancreas of an…
Celiac DiseaseCeliac disease in childrenPenicillinThe Origin and Behavior of Mutable Loci in Maize, by Barbara McClintock, was published in 1950 in the Proceedings of the National Academy of Sciences…
LiteratureMcClintock, Barbara, 1902-1992ChromosomesTransposonsCornHideyo Noguchi researched bacteria, including Treponema pallidum, the bacterium that causes syphilis, in Japan and the US during the early 1900s.…
SyphilisNeurosyphilisCentral Nervous System SyphilisTreponema pallidumYellow FeverAbraham Trembley's discovery of the remarkable regenerative capacity of the hydra caused many to question their beliefs about the generation of…
PeopleRegenerationBiographyHydraIn 1948, Olive Watkins Smith published 'Diethylstilbestrol in the Prevention and Treatment of Complications of Pregnancy' in the American Journal…
LiteraturePregnancyEndocrine disrupting chemicalsHormonesObstetricsIn 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…
LiteratureContraceptionPublicationsreligionReproduction