In 1900, Austrian physician Karl Landsteiner discovers the ABO blood group system, solving the mystery of why so many blood transfusions were fatal and laying the foundation for safe transfusion medicine. Building on his work, other scientists develop blood typing, anticoagulant storage, and cross-matching techniques that revolutionize medical care and save countless lives, particularly during the First World War.
Word Count
1,226
Reading Time
7 min
Difficulty
intermediate
Genre
History
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