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The Golgi staining technique, also called the black reaction after the stain's color, was developed in the 1870s and 1880s in Italy to make brain…
TechnologyGolgi, Camillo, 1843-1926Stains and staining (Microscopy)NeuronsMicroscope slidesIn 1893, Julia Barlow Platt published her research on the origins of cartilage in the developing head of the common mudpuppy (Necturus maculosus)…
CartilageEmbryosGastrulationEmbryologyNecturusIn the early 1920s, researchers Edgar Allen and Edward Adelbert Doisy conducted an experiment that demonstrated that ovarian follicles, which produce…
OvariesCorpus LuteumEndometriumEstrogenHormones, SexTransposition of the great arteries or TGA is a potentially fatal congenital heart malformation where the pulmonary artery and the aorta are switched…
Transposition of Great VesselsMustard, William T., 1914-1987Congenital Heart DiseaseSenning OperationDandy-Walker Syndrome is a congenital brain defect in humans characterized by malformations to the cerebellum, the part of the brain that controls…
Dandy, Walter Edward, 1886-1946Walker, A. Earl (Arthur Earl), 1907-1995HydrocephalusBirth DefectsDandy-Walker SyndromeWalter Edward Dandy studied abnormalities in the developing human brain in the United States in the twentieth century. He collaborated with…
HydrocephalusBrain--Ventricles--RadiographyVentriculography, CerebralDandy-Walker SyndromeDandy-Walker MalformationIn the 1989 case Webster v. Reproductive Health Services, the US Supreme Court upheld the constitutionality of a Missouri law regulating abortion…
LawBirth control clinicsAbortionFamily planning servicesAbortion--Law and legislation--United StatesIn the 2014 case Burwell v. Hobby Lobby, the US Supreme Court ruled that the contraceptive mandate promulgated under the Patient Protection and…
LawUnited States. Supreme CourtContraceptionEmployer-sponsored health insuranceEmployer-sponsored health insurance--Law and legislationKarl Oskar Illmensee studied the cloning and reproduction of fruit flies, mice, and humans in the US and Europe during the twentieth and twenty-first…
CloningMolecular CloningClone CellsTwinsEmbryosRobert Guthrie developed a method to test infants for phenylketonuria (PKU) in the United States during the twentieth century. PKU is an inherited…
PhenylketonuriaMental RetardationMaple Syrup Urine DiseaseGalactosemiaMicrobiology