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What was the field of Landsteiner's Nobel Prize?

  • Chemistry

  • Physics

  • Physiology or Medicine

  • Peace

Answer

**Physiology or Medicine** was awarded to Karl Landsteiner for his discovery of the ABO blood group system. This breakthrough discovery revolutionized the field of transfusion medicine, ensuring safer blood transfusions by preventing life-threatening reactions. Landsteiner's groundbreaking research laid the foundation for modern blood typing and transfusion practices, saving countless lives worldwide.
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