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Persian physican rhazes first to identify smallpx
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Dutch lens grfinder, invents the microscope
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Publishes '' An Antomical Study of the Motion of the Heart and the Blood in Animals ''
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1st to administer meds by means of an animal bladder attached to a quill
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Identifys the cure for common diease for sailor named scurvy
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made an method to protect people from smallpox by exposing them to cowpox virus.
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