Multiple choice

Which of the following statements is CORRECT about the ABO blood system?

  1. It was discovered in the 1950's.

  2. It was discovered by Karl Landsteiner.

  3. Mostly people are literally typed for this system because of the difficulty of the procedure and high cost.

  4. The K antigen is an essential precursor to the ABO blood group antigens.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Karl Landsteiner discovered the ABO system in 1900 and 1901 while trying to understand why blood transfusions sometimes saved lives and at other times caused death.

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