AB blood group antigen are known as ________ factors?
Correct answer: D. Landsteiner
- A. Duffy
- B. Lutheran
- C. Rhesus
- D. Landsteiner
Explanation
The A and B antigens of the ABO system are historically associated with Landsteiner’s classification and are therefore called Landsteiner factors in older terminology. Duffy, Rhesus, and Lutheran refer to separate blood-group systems.
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