Question : Karl Landsteiner is known for the discovery of which one of the following?
Option 1: Crescograph
Option 2: Radioactivity
Option 3: Blood group
Option 4: X-rays
Correct Answer: Blood group
Solution : The answer is the Blood group .
Karl Landsteiner, credited with the discovery of blood groups, was awarded the Nobel Prize in Medicine in 1930 for this ground-breaking achievement. His research led to the identification of four distinct blood types in humans: A, B, O, and AB, collectively known as the ABO system.
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