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ABO system

A Dictionary of Biology | 2004 | Copyright

ABO system One of the most important human blood group systems. The system is based on the presence or absence of antigens A and B on the surface of red blood cells and antibodies against these in blood serum. A person whose blood contains either or both of these antibodies cannot receive a transfusion of blood containing the corresponding antigens as this would cause the red cells to clump (see agglutination). The table illustrates the basis of the system: people of blood group O are described as ‘universal donors’ as they can give blood to those of any of the other groups. See also immune response.

Group	Antigens on red cell surface	Antibodies in serum	Blood group of people donor can receive blood from	Blood group of people donor can give blood to
The ABO blood group system
A	A	anti-B	A, O	A, AB
B	B	anti-A	B, O	B, AB
AB	A and B	none	A, B, AB, O	AB
O	neither A nor B	anti-A and anti-B	O	A, B, AB, O

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"ABO system." A Dictionary of Biology. 2004. Encyclopedia.com. 29 May. 2012 <http://www.encyclopedia.com>.

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ABO system

The Oxford Pocket Dictionary of Current English | 2009 | Copyright

ABO system • n. a system of four basic types (A, AB, B, and O) into which human blood may be classified, based on the presence or absence of certain inherited antigens.

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"ABO system." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 29 May. 2012 <http://www.encyclopedia.com>.

"ABO system." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (May 29, 2012). http://www.encyclopedia.com/doc/1O999-abosystem.html

"ABO system." The Oxford Pocket Dictionary of Current English. 2009. Retrieved May 29, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-abosystem.html

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ABO system

A Dictionary of Nursing | 2008 | Copyright

ABO system n. see blood group.

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"ABO system." A Dictionary of Nursing. 2008. Encyclopedia.com. 29 May. 2012 <http://www.encyclopedia.com>.

"ABO system." A Dictionary of Nursing. 2008. Encyclopedia.com. (May 29, 2012). http://www.encyclopedia.com/doc/1O62-ABOsystem.html

"ABO system." A Dictionary of Nursing. 2008. Retrieved May 29, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-ABOsystem.html

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