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Reported that living things are composed of littke boxes or cells.
Robert Hooke
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Said cells arise from pre-existing life "cell theory"
Rudolf Virchow
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Described living "animalcules" observed in teeth scappings, rain water and perppercorn infusions
Anton Van Leewenhoek
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Demonstratured that micro-organisms are present in the air, S-shape flask kept micorbes out but let in air, Paterization and fermentation
Louis Pasteur
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Showed silk worm disease caused by fungus
Agostino bassi
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Advocated handwashing to prevent transmission of puerperal (childbearing) disease
Ignoz Semmelwise
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Used chemical disinfectant to prevent surgical wound infections
Joseph Lister
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Proved bacterium causes anthrax, provided expiermental steps to prove that a specific microbes caused a specific disease,
Robert Koch, "Koch postulates"
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Innoculated a person with cowpox virus, person then immuned to small pox
Vacca=cow, immunity
Edward Jenner
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Speculated about a "magic bullet" that could destroy a pathogen without harming the host, developed synthetic arsenic drug "salvarsan" to treat sphyillis
Paul Ehrillich
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discovered 1st anitbiotic, pencillium fungus made penicillin
Alexander Fleming
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