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In 1978, James Kitching discovered two dinosaur embryos in a road-cut talus at Roodraai (Red Bend) in Golden Gate Highlands National Park, South…
ContextDinosaursDinosaurs--EggsMassospondylus carinatusMassospondylusWhen cells-but not DNA-from two or more genetically distinct individuals combine to form a new individual, the result is called a chimera. Though…
ContextChimerismEmbryosEmbryonic Stem CellsMosaicismLysogenic bacteria, or virus-infected bacteria, were the primary experimental models used by scientists working in the laboratories of the Pasteur…
ContextInstitut Pasteur (Paris, France)BacteriaEscherichia coliMonod, JacquesThalidomide is a sedative drug introduced to European markets on 1 October 1957 after extensive testing on rodent embryos to ensure its safety. Early…
ContextTeratogenicity testingAbnormalities, HumanThalidomide--Side effectsThalidomide