EntityQ188010· pop 39· linked from 272 articles

ABO blood group system

classification of blood types

Research

17,381 papers

Biological and clinical aspects of ABO blood group system.The journal of medical investigation : JMI · 2008
The ABO blood group system revisited: a review and update.Immunohematology · 2009
Blood-group substances.Science (New York, N.Y.) · 1966
[ABO blood-group system: past and present].Postepy higieny i medycyny doswiadczalnej · 2002
Immunochemical and molecular genetic basis of the histo-blood group ABO(H) and related antigen system.Bailliere's clinical haematology · 1991

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Sources (3)

Article

ABO blood group antigens present on red blood cells and IgM antibodies present in the serum

The ABO blood group system is used to denote the presence of one, both, or neither of the A and B antigens on erythrocytes (red blood cells). For human blood transfusions, it is the most important of the 48 different blood type (or group) classification systems currently recognized by the International Society of Blood Transfusions (ISBT) as of June 2025. A mismatch in this serotype (or in various others) can cause a potentially fatal adverse reaction after a transfusion, or an unwanted immune response to an organ transplant. Such mismatches are rare in modern medicine. The associated anti-A and anti-B antibodies are usually IgM antibodies, produced in the first years of life by sensitization to environmental substances such as food, bacteria, and viruses.