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Proposed circulatory system of blood.
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Found a vaccine for immunity to smallpox.
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Came up with ideas that were published about over population.
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Founder of the nursing profession.
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Came up with ideas of natural selection.
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Known at the "Father of Antiseptic Surgery" for reducing infection rate in wounds.
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Cross breeded pea plants to come up with how traits are passed on.
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Discovered a vaccine for anthrax in animals.
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Organized the American Red Cross.
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Invented the technique from Gram staining bacteria.
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Ideas for controlling cholera were approved.
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Found a way to prevent growth of staphylococci (penicillin).
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Made efforts to contribute blood to the Red Cross for military.
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Discovered effects of the pestiside DDT which was later banned.
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Developed a safe and effective vaccine for polio.
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Developed an oral polio vaccine.
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Awarded the 1960 Nobel Prize for Physiology or Medicine for demonstrating acquired immune tolerance.
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Received the Nobel Prize for being a major contributor to the discovery of the molecular structure of DNA.
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Tested his theory that healthy cells also contain dormant viral oncogenes that, when activated, cause cancer.
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Came up with a technique for using a gel electrophoresis to read the nucleotide sequences of DNA segments.
