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  The difference between veins and arteries in discovered.
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  He discovered the difference between measles and small pox.
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  Medical care becomes regulated.
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  Being a surgeon becomes a profession.
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  Doing dissections and autopsies become more popular.
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  Islamic hospitals; health care for the sick.
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  Christian monasteries founded to treat the ill.
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  French woman Jacoba Felicie tries to practice medicine but is denied.
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  Robert Hooke- invented reflective microscope.
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  Antoine van Leeuwenhoek describes bacteria.
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  Francis Bacon uses microscope to discover plague fleas.
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  Discovery of blood cells, bacteria, protozoa, and stethoscope.
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  Edward Jenner discovered 1st vaccination of small pox.
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  Cholera returns and kills 30,000 people.
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  John Snow stops outbreak of cholera.
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  Salk discovers polio vaccine.
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  WHO declares small pox is eradicated.
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  Gardasil, a vaccine that prevents cirvical cancer is approved by FDA.
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  Human skin cells are used to create embryonic stem cells (discovered).
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  First artificial heart implant in a patient, but the patient died a month later.