Biology WAEC

During blood transfusion, agglutination may occur as a result of the reaction between?

A. similar antigens and antibodies
B. contrasting antigens and antibodies
C. two different antigens
D. two different antibodies
E. white blood cells from the two individuals.

Correct Answer:

Option B – contrasting antigens and antibodies

Explanation

AGGLUTINATION TABLE

Blood group

(ABO system)

Anti- A serum Anti- B serum
A Clumping No clumping
B No clumping Clumping
AB Clumping Clumping
O No clumping No clumping

Note that the contrasting antibodies clump, as well as the contrasting antigens.

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