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| Q. |
What happens to a person who receives the wrong type of blood? |
| A. | All the arteries constrict |
| B. | All the arteries dialates |
| C. | The RBCs agglutinate |
| D. | The spleen and lymphnodes deteriorate |
| Answer» C. The RBCs agglutinate | |
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Explanation: Red blood cell agglutination indicates clumping of RBC's due to cold agglutinins which are most commonly IgM antibodies. These antibodies cross-link red cells, which causes overlapping (arrow) and loss of central pallor. The agglutination leads to reduction in red cell count, elevation in MCH and MCV as measured by automated instruments. Hernagglu-tination is when the particles involved are red blood cells. The agglutin is called hemagglutinin.. |
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