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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 ?
Isoagglutinin to the ABH antigens are naturally occurring alloantibodies found in plasma or serum of an individual lacking the corresponding antigen on red cells.
In order to ensure successful ABOi KT, the titers of isoagglutinins that are directed against the donor should be decreased: apheresis and rituximab are used to decrease isoagglutinin levels.
The first 25 patients received postoperative immunoadsorptions per protocol and were routinely monitored for isoagglutinin titers after transplantation.
This series includes patients with very high starting isoagglutinin titers.