Which of the following is an example of mismatched blood transfusion?
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Type 1 hypersensitivity
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Type 2 hypersensitivity
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Type 3 hypersensitivity
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Type 4 hypersensitivity
B
Correct answer
Explanation
Type 2 hypersensitivities involve interactions of surface antigens of cells followed by complement assisted lysis of cells. Mismatched blood transfusion is an example of type 2 hypersensitivity. On the basis of antigens on the cell surface, there are 4 blood groups and incompatibility exists if the blood containing different Ag is given.