Blood group systems
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.
| '''Phenotype''' |
A |
B |
AB |
O |
| '''Genotype''' |
AA or AO |
BB or BO |
AB |
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
- ↑ http://ibgrl.blood.co.uk/isbt%20pages/isbt%20terminology%20pages/table%20of%20blood%20group%20systems.htm, Table of blood group systems, ISBT (August 2008). Retrieved on 15 November 2010.
External links