A process that describes clumping of erythrocytes due to antigen-antibody interaction?

A process that describes clumping of erythrocytes due to antigen-antibody interaction?

• A. Hemolysis
• B. Crenation
• C. Osmosis
• D. Hemagglutination

Answer: (D)

Clumping of red blood cells happens when antibodies recognize antigens on the surface of erythrocytes and cross-link multiple cells, forming visible aggregates. This is called hemagglutination, a key concept in serology and blood typing because the antibody-antigen binding creates a lattice that makes the cells stick together rather than stay dispersed. It’s distinct from hemolysis, which is the bursting of red cells releasing hemoglobin; crenation, which is cell shrinkage from osmotic imbalance; and osmosis, the movement of water across a membrane.

Clumping of red blood cells happens when antibodies recognize antigens on the surface of erythrocytes and cross-link multiple cells, forming visible aggregates. This is called hemagglutination, a key concept in serology and blood typing because the antibody-antigen binding creates a lattice that makes the cells stick together rather than stay dispersed. It’s distinct from hemolysis, which is the bursting of red cells releasing hemoglobin; crenation, which is cell shrinkage from osmotic imbalance; and osmosis, the movement of water across a membrane.