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An isoantibody normally present in the serum of an individual that causes the agglutination of the red blood cells of another individual of the same species.


(Biology) an antibody that causes agglutination of red blood cells in animals of the same species from which it was derived


(ˌaɪ soʊ əˈglut n ɪn)

an agglutinin that can effect isoagglutination.
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Noun1.isoagglutinin - an antibody produced by one individual that causes agglutination of red blood cells in other individuals of the same species
agglutinin - an antibody that causes agglutination of a specific antigen
References in periodicals archive ?
org/Working-Parties/Registry/Diagnosis-criteria/) due to a lack of data on our patients' vaccination responses and isohemagglutinin titer levels.
Antibody titration is clinically indicated in 1) prenatal studies, 2) identifying antibody specificity, 3) separating multiple antibodies, and when 4) performing ABO isohemagglutinin titers on apheresis donor platelet units or organs that are to be transplanted across ABO blood types.
Delayed immune hemolysis due to rapid isohemagglutinin production by donor-derived lymphocytes has been reported in transplants with a minor or bidirectional ABO-mismatched graft and is known as passenger lymphocyte syndrome [6-10].