AB blood group was discovered by

Decastello and Sturli

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Karl Landsteiner

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William Harvey

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Wallace Alfred

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Solution

The correct option is C Karl Landsteiner
AB blood group and Rh blood group was discovered by Karl Landsteiner. According to AB blood group, there are three types of blood group A, B and O depending upon presence or absence of antigen on RBC. Blood group A has A antigen on RBC. Similarly, blood group B has B antigen on RBC. Blood group O does not have any antigen on RBC whereas blood group AB has both antigen A and B on RBC.
Thus, the correct answer is option B.

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