ABO system
American Heritage Dictionary:
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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.
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.
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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 compatability of blood for transfusion.
Oxford Dictionary of Biochemistry:
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ABO system
one of the systems of human blood groups, of great importance in blood transfusion because human plasma contains natural antibodies against A and B blood group antigens of the ABH system (see ABH antigens). The antigens on the red blood cells and the plasma antibodies corresponding to the various phenotypes are shown in the table. See also A-transferase, B-transferase, O antigen (def. 2).
| Phenotype (blood group) | Antigen on red cells | Antibody in plasma |
| A | A | anti-B |
| B | B | anti-A |
| AB | A and B | neither |
| O | H | anti-A + anti-B |
| ABM, ABH antigens, ABCR | |
| ABP1, ACA, ACC |
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categories related to 'ABO system'
- Business and Practice of Medicine - ABO system: classification of human blood into four major groups, A, B, AB, and O, used in determining compatibility for transfusions
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American Heritage Dictionary
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
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American Heritage Stedman's Medical Dictionary
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company.
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Oxford Dictionary of Biochemistry
Oxford University Press. Oxford Dictionary of Biochemistry and Molecular Biology © 1997, 2000, 2006 All rights reserved.
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