A) Blood group O
B) Blood group A
C) Blood group B
D) Blood group AB
Correct Answer: A
Solution :
Landsteiner recognized three kinds of blood groups-A, B and 0. AB is the fourth type of blood group, which was discoverd by Von Decastello and Sturle (1902).| Blood group | Antigen in RBCs | Antibodies in plasma |
| A B AB O | A B A and B None | Anti.-b Anti.-a None Anti.- a and b |
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