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Jan 1, 1249
Glasses
Roger Bacon invents spectacles -
Jan 1, 1489
Autopsey
Leonardo da Vinci dissects corpses -
Microscope
Zacharius Jannssen invents the microscope -
Blood Cells Discovered
Anton van Leeuwenhoek discovers blood cells -
First Blood transfusion
British obstetrician James Blundell performs the first successful transfusion of human blood. -
Anesthetic
Dr. Horace Wells uses nitrous oxide as an anesthetic -
Anesthetics
Dr. Horace Wells, American dentist, uses nitrous oxide as an anesthetic -
Contact Lenses
First contact lenses developed -
Tetanus
Emil von Behring discovers antitoxins and uses them to develop tetanus and diphtheria vaccines -
X-Rays
German physicist Wilhelm Conrad Roentgen discovers X rays. -
Aspirin
Felix Hoffman develops aspirin (acetyl salicylic acid). The juice from willow tree bark had been used as early as 400 BC to relieve pain. -
Stethescope
Rene Laennec invents the stethoscope -
Diabetes
Insulin first used to treat diabetes. -
Tuberculosis
First vaccine for Tuberculosis created -
Influenza
First vaccine for influenza was developed. -
Pacemaker
John Hopps invented the first cardiac pacemaker -
Vaccine for Measles
First vaccine developed for measles -
HIV/ AIDS
HIV, the virus that causes AIDS, is identified -
Cancer Vaccine
First vaccine to target a cause of cancer -
Stem Cell Research
Scientists discover how to use human skin cells to create embryonic stem cells.