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Scientists began to study chick embryos and later proved that the development of the skin occurs in epigentic steps.
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Scientists discovered that all organisms depend on chemical reactions that happen within our cells which could be reproduced in a laboratory.
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A man named Alexander Flemming altered the health-care field by discovering antibiotics.
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Performed on identical twins
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First Lung and Liver transplants
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First Pancreas transplant
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First heart transplant
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A 36 year-old man replaced his enlarged trachea with a synthetic one when he had tracheal cancer
