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agglutination of erythrocytes caused by an isohemagglutinin.


Isohemagglutinins are antibodies against blood group antigens, usually of the IgM isotype. People with type O blood will have isohemagglutinin titers against both type A and B blood groups but those with type AB blood have neither.
See also: isoagglutination.
[iso- + G. haima, blood, + L. ad, to, + gluten, glue]


Agglutination of red blood cells as a result of the reaction between an isoagglutinin and specific antigen in or on the cells.
Synonym(s): isohemagglutination.
[iso- + L. ad, to, + gluten, glue]