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explained how the heart and blood system works
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Made first vactionations for smallpox
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proposed that the world population would outgrow the food supply.
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First vaccines for raies and anthrax 1848
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studied mammal skeletal system
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showed that there is chance for incomplete dominance or that some genes will not appear
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evolution theory
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found carbolic acid to be killing and protect new cells growth
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discover loop of henle in kidneys
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made american red cross
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vaccine for tetanus
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found TB
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found penicillian as a great infection fighting drug
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found ways to store blood plasma
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first to isolate flu also found that there more than one flu
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found cure for polio
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helped find polio cure