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Identify the following individual:
Lived: 1868 - 1943 Discovered the human blood group system, paving the way for safe blood transfusions. Also discovered the Rh factor in blood, proved polio is an infectious disease spread by a virus, and discovered haptens.
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Albert Einstein |
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Karl Landsteiner |
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J. J. Thomson |
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Katherine Johnson |
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The correct answer was Karl Landsteiner
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