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William Harvey described the circulation of blood to and from the heart
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Anton van Leeuwenhoek invented the microscope in 1666
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Gabriel Fahrenheit created the first mercury thermometer in 1714
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Joseph Priestley discovered the element oxygen in 1774
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John Hunter introduced tube feeding in 1778
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Edward Jenner developed the smallpox vaccine! (Derived from the cowpox vaccine)
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James Blundell performed the first successful blood transfusion on a human in 1818
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Rene Laennec invented the stethoscope in 1819
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Dr. William Morton, American dentist,began using ether as an anesthetic in 1846
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Dr. James Simpson began using choloroform as an anesthetic in 1847
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Elizabeth Blackwell became the first female physician in the United States in 1849
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Gregory Mendel discovered the patterns of inheritence through the use of the pea plant.
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Clara Barton founded the American Red Cross
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Demitri Ivanofski discovered viruses in 1892
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William Roentgen discovered the first X-ray.
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Almroth Wright developed a vaccine for typhoid fever in1897
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Marie Curie first isolated radium in 1910
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Sir Alexander Fleming discovered penicillin
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Jonas Salk developed the vaccine for polio
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Physicians use amniocentesis to diagnose ingerited diseases before birth in 1957
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Louise Brown was the first successfuly born "test tube" baby
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The frirst gene therapy to treat disease occurred in 1990
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Ian Wilmut, Keith Campbell, and collegues cloned the first sheep named Dolly.
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Rhazes developed the criteria for distinguishing between smallpox and measles in 910 AD
