Karl Landsteiner is associated with which major contributions?

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Multiple Choice

Karl Landsteiner is associated with which major contributions?

Karl Landsteiner’s major contribution is the discovery of the ABO blood group system, identifying A and B antigens on red blood cells and showing that people have antibodies against the other blood types. This explained why some blood transfusions trigger severe reactions while others are safe, and it made accurate blood typing and donor–recipient matching possible. This work transformed transfusion medicine and earned him the Nobel Prize in Physiology or Medicine in 1930. The other items are associated with different scientists: penicillin was discovered by Alexander Fleming; the smallpox vaccine was developed by Edward Jenner; and Koch’s postulates were formulated by Robert Koch.

Karl Landsteiner’s major contribution is the discovery of the ABO blood group system, identifying A and B antigens on red blood cells and showing that people have antibodies against the other blood types. This explained why some blood transfusions trigger severe reactions while others are safe, and it made accurate blood typing and donor–recipient matching possible. This work transformed transfusion medicine and earned him the Nobel Prize in Physiology or Medicine in 1930. The other items are associated with different scientists: penicillin was discovered by Alexander Fleming; the smallpox vaccine was developed by Edward Jenner; and Koch’s postulates were formulated by Robert Koch.

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