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On 10 March 1988, China's first baby conceived through human in vitro fertilization (IVF) and embryo transfer (ET), commonly referred to as a test-…
ReproductionExperimentsFertilityFrank Rattray Lillie's research on freemartins from 1914 to 1920 in the US led to the theory that hormones partly caused for sex differentiation in…
Lillie, Frank Rattray, 1870-1947Intersexuality in animalsFreemartinismHormonesExperiments"A Diffusible Agent of Mouse Sarcoma, Producing Hyperplasia of Sympathetic Ganglia and Hyperneurotization of Viscera in the Chick Embryo," by Rita…
Nerve Growth FactorExperimentsMiceChicksIn 1910, Thomas Hunt Morgan performed an experiment at Columbia University, in New York City, New York, that helped identify the role chromosomes…
DrosophilaHeredityInheritance of acquired charactersColumbia University--Graduate studentsMutationExperiments conducted by Elizabeth Blackburn, Carol Greider, and Jack Szostak from 1982 to 1989 provided theories of how the ends of chromosomes,…
TelomereGreider, Carol W.Chromosome replicationTelomeraseDNABetween 1991 and 1994, Christian Peeters and Bert Hölldobler studied the reproductive behaviors of the Indian jumping ant (Harpegnathos saltator), a…
AntsPoneraInsectsWorkers (Insects)Queens (Insects)'On the Permanent Life of Tissues outside of the Organism' reports Alexis Carrel's 1912 experiments on the maintenance of tissue in culture media. At…
Tissue cultureStem CellsStem cells--ResearchEmbryologyGerm CellsIn 1963, Ignacio Ponseti and Eugene Smoley experimentally determined an effective and minimally invasive method of treating congenital clubfoot.…
ClubfootFoot--AbnormalitiesOrthopedicsCongenital Talipes EquinovarusClubfoot, CongenitalBarbara McClintock conducted experiments on corn (Zea mays) in the United States in the mid-twentieth century to study the structure and function of…
TransposonsCornCytogeneticsChromosomesGeneticsAlejandro Sánchez Alvarado's laboratory group has employed molecular tools to investigate old questions about regeneration and as a result have…
RegenerationExperiments