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Eugen Steinach researched sex hormones and their effects on mammals in the late nineteenth and early twentieth centuries in Europe. He experimented…
Hormones, SexGenerative organsGenital OrgansGonadal Steroid HormonesTesticular HormonesOrchiopexy, also known as orchidopexy, is a surgical technique that can correct cryptorchidism and was successfully performed for one of the first…
TechnologyTestis--CancerTestisTestis--DiseasesTestis--SurgeryJohns Hopkins Medical Center, located in Baltimore, Maryland, opened in 1889; its associated medical school opened four years later. Today the…
OrganizationFertilityOrganizationsReproductionmedicineIn October 2017, Columbia University Mailman School of Public Health in New York City, New York, and the International Rescue Committee published A…
LiteratureRefugee campsWomen refugeesRefugee childrenDisplaced PersonsIn 2002, after applying for government assistance in the state of Washington, Lydia Fairchild was told that her two children were not a genetic match…
ChimerismHuman GeneticsForensic geneticsLone twinsPaternity testingAmenorrhea is considered a type of abnormal menstrual bleeding characterized by the unexpected absence of menstrual bleeding, lasting three months or…
Amenorrhea, PrimaryMenstruation disordersMenstrual CyclePolycystic ovary syndromeBirth ControlThe Center for Reproductive Health was a fertility clinic run by a partnership of world-renowned fertility specialists from 1986 to 1995. The Center…
OrganizationReproductive RightsOrganizationsReproductionbioethicsPreformationism was a theory of embryological development used in the late seventeenth through the late eighteenth centuries. This theory held that…
OvaSpermEdmund Beecher Wilson in the US published An Atlas of Fertilization and Karyokinesis of the Ovum (hereafter called An Atlas) in 1895. The book…
LiteratureKaryokinesisFertilization (Biology)ConceptionDevelopmental BiologyCalvin Blackman Bridges studied chromosomes and heredity in the US throughout the early twentieth century. Bridges performed research with Thomas…
DrosophilaHeredityInheritance of acquired charactersColumbia University--Graduate studentsMutation