Blood group systems: Difference between revisions
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== External links<br> == | == External links<br> == | ||
*[http://ibgrl.blood.co.uk/isbt%20pages/isbt%20terminology%20pages/table%20of%20blood%20group%20systems.htm Table of blood group systems]<br> | *[http://ibgrl.blood.co.uk/isbt%20pages/isbt%20terminology%20pages/table%20of%20blood%20group%20systems.htm Table of blood group systems]<br> | ||
*[http://www.ncbi.nlm.nih.gov/bookshelf/br.fcgi?book=rbcantigen&part=ch05ABO The ABO blood group] | |||
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Revision as of 18:15, 15 November 2010
Blood group (or blood type) is a term used to clasify blood based on the presence or absence of a specific antigen on red blood cells surface. According to the International Society of Blood Transfusion, there are about 30 human blood group systems recognized so far[1].
ABO blood group system
The most common blood group system being used nowadays is ABO blood group system. In this system, there are 4 classification of blood types. They are group A, B, AB and O. These groups are classified according to the presence or absence of ABO antigen.
| Blood group | Antigen(s) present on erythrocytes | Antibodies present in plasma | Genotype(s) |
| A | A antigen | Anti-B | AA or AO |
| B | B antigen | Anti-A | BB or BO |
| AB | A and B antigens | none | AB |
| O | none | Anti-A and B | OO |
Rh blood group system
Rh blood group system is the second most important system in determining blood groups. It is based on the presence or absence of D antigen on the red blood cells surface.
See also
References
- ↑ Table of blood group systems, ISBT (August 2008). Retrieved on 15 November 2010.
External links