ABO system


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Related to ABO system: Rh factor, Rh system, Blood Types

ABO system

(ā′bē-ō′)
n.
A classification system for human blood that identifies four major blood types based on the presence or absence of two antigens, A and B, on red blood cells. The four blood types (A, B, AB, and O, in which O designates blood that lacks both antigens) are important in determining the compatibility of blood for transfusion.

ABO System

The major alloantigen system in humans, which is based on 3 carbohydrate antigens expressed on red cells, encoded on chromosome 9q34. 
Significance ABO blood groups determine to whom one can donate blood from whom one can accept blood. Type A or AB blood causes an immune reaction in type Bs. Type B and AB blood cause an immune reaction in type As. Conversely, type O blood has no A or B antigens—type Os are universal donors. Since AB blood already produces both antigens, type ABs can accept any of the other blood types without suffering an immune reaction, and are thus known as universal recipients, as they form antibodies to neither A nor B antigens.

ABO system

ABO blood group system Transfusion medicine The major alloantigen system in humans, based on 3 carbohydrate antigens expressed on RBCs, encoded on chromosome 9q34 Significance ABO blood groups determine who can donate blood to, or accept blood from, whom; type A or AB blood causes an immune reaction in type Bs; type B and AB blood cause an immune reaction in type As; conversely, type O blood has no A or B antigens–type Os are universal donors; since AB blood already produces both antigens, type ABs can accept any of the other blood types without suffering an immune reaction, and are thus known as universal recipients, as he/she forms antibodies to neither A nor B antigens. See Blood group antigens, Lewis antigen, Transplantation, Universal donor, Universal recipient.
References in periodicals archive ?
Hardy-Weinberg genotypic frequencies for the ABO system were in equilibrium among Hispanics, an observation that does not support these explanations.
Molecular genetic basis of the histo-blood group ABO system. Nature 1990; 345 : 229-33.
The incidence of finding ABO system antigens in the population of the Russian Federation.
[1] Among these the major blood group system is ABO system and Rh system.
In the overall data, blood type O was predominant (35.68%) at the ABO system followed by B, A and AB blood types with the percentages of 35.58, 22.46, and 6.28, respectively.
gel cards for determination of the blood group according to the abo system by direct and reverse method 12 pack, indicated by the participants
Gel map for determining group and rh-affiliation in newborns in accordance with auction documentation, red blood cells ab for cross-reaction by gel filtration in accordance with auction documentation, erythrocytes for screening antibodies in the indirect coombs reaction in accordance with auction documentation, gel map for screening of incomplete immune anti-erythrocyte antibodies against antigens of the abo system in accordance with the auction documentation, card for screening of antiresusive antibodies in accordance with auction documentation
DISCUSSION AND CONCLUSION: ABO system antibodies arise shortly after birth on exposure to environmental agents for which antigenic makeup is similar to the A and B antigen found on human red blood cells (RBCs).
Liquid reagent for determination of aptt for automatic coagulometer ca-660, sysmex, it is available from the customer., a set of reagents for determination of triglycerides for the biochemical analyzer bs-120 mindray, installed in the customer~s establishment., diagnostic liquid reagent for determination of human blood groups of the abo system, diagnostic liquid reagent for determination of human blood groups of the abo system, diagnostic liquid reagent for determination of human blood groups of the abo system.