Agglutination is the clumping together of particles, a reaction that can be used as an immunological test by exploiting the interaction between antibody and a particulate antigen. The antibodies that produce such a reaction are known as agglutinins. | Agglutination is the clumping together of particles, a reaction that can be used as an immunological test by exploiting the interaction between antibody and a particulate antigen. The antibodies that produce such a reaction are known as agglutinins. |