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Parasitic twins, a specific type of conjoined twins, occurs when one twin ceases development during gestation and becomes vestigial to the fully…
Twins, ConjoinedReproductionFetusCongenital DisordersHuman DevelopmentThe most-watched NOVA documentary ever made and a revolution in the understanding of human development, The Miracle of Life (abbreviated Life)…
LiteratureReproductionHuman DevelopmentMarie Charlotte Carmichael Stopes was born in Edinburgh, Scotland, on 15 October 1880 to Charlotte Carmichael Stopes, a suffragist, and Henry Stopes…
Peoplepublic healthethicsReproductionBiographyFrank 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 animalsFreemartinismHormonesExperimentsPearl Luella Kendrick researched prevention for pertussis, commonly known as whooping cough, in Grand Rapids, Michigan, during the mid-1900s.…
Tuberculosis VaccinesPertussis vaccinesAmerican Public Health AssociationPublicationsViral vaccinesThroughout history many different methods have been devised for the early detection of pregnancy. From the time of the Ancient Egyptians, inspection…
Pregnancy TestsReproductionFertilityEnovid was the first hormonal birth control pill. G. D. Searle and Company began marketing Enovid as a contraceptive in 1960. The technology was…
TechnologyContraceptionReproductionReproductive RightsMatthias Jacob Schleiden helped develop the cell theory in Germany during the nineteenth century. Schleiden studied cells as the common element among…
Cell BiologyBotanyEpigenesisEmbryologyBiology, ExperimentalThis diagram shows the life cycle of Neurospora crassa, a mold that grows on bread. N.
Neurospora crassaMicrobiologyMicroscopyGrowthdevelopmentPenicillin is a type of drug called an antibiotic that can treat bacterial infections by killing the bacteria or making it difficult for the bacteria…
Antibiotics, PenicillinStaphylococcusAntibacterial Drug ResistanceSyphilisDrug Development