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Karl Landsteiner introduces the system to classify blood into A, B, AB, and O groups.
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Frederick Hopkins suggests the existence of vitamins and suggests that a lack of vitamins causes scurvy and rickets.
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Earle Dickson Invented the Band-Aid.
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Insulin first used to treat diabetes.
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First vaccine for Tuberculosis. It is spread through the air when people who have an active TB infection cough, sneeze, or otherwise transmit their saliva through the air.
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First vaccine developed for yellow fever.
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Joseph Murray performs the first human kidney transplant (on identical twins).
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Thomas Starzl performs the first human liver transplant.
James Hardy performs the first human lung transplant. -
South African heart surgeon Dr. Christiaan Barnard performs the first human heart transplant.
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First vaccine developed for chicken pox
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Robert S. Ledley invents CAT-Scans
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First test-tube baby is born in the U.K.
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HIV, the virus that causes AIDS, is identified
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First vaccine for Hepatitis A.
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Dolly the sheep becomes the first clone.
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Human Genome Project, all human genes identified.
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Carlo Urbani, of Doctors without Borders alerted the World Health Organization to the threat of the SARS virus, triggering the most effective response to an epidemic in history. Urbani succumbs to the disease himself in less than a month.
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First vaccine to target a cause of cancer.
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Laurent Lantieri performs the first full face transplant.
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First baby from embryos screened the eye cancer gene.