In 1900, Karl Landsteiner, an Austrian scientist at the University of Vienna discovered four different blood groups that characterize human populations. The blood groups are: A, B, AB, and O. Why are blood type AB persons considered as universal recipients?
A. A blood type AB person does not have antigens A and B
B. A blood type AB person does not have any a antibodies
C. A blood type AB person does not have any a or b antibodies
D. A blood type AB person’s blood will clump when given to people with any other blood type
A. A blood type AB person does not have antigens A and B
B. A blood type AB person does not have any a antibodies
C. A blood type AB person does not have any a or b antibodies
D. A blood type AB person’s blood will clump when given to people with any other blood type
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Answer:
D.
because AB positive patients can receive red blood cells from all blood types.
Initially, Landsteiner recognized three different blood types: A, B, and C. The C-blood type was later more commonly called type-O. In 1902, one of Landsteiner's students found a fourth blood type, AB, which triggered a reaction if introduced into either A or B blood.17 Feb 2017