See Also: Blood group(health)
blood group(dictionary)
Blood group(medicine)
Blood group, ABO(health)
K blood group(medicine)
ABO blood group(health)
abo blood group(medicine)
CDE blood group(medicine)
Lewis blood group(medicine)
p blood-group system(medicine)

ABO blood group (health)


The major human blood group system. A person's ABO type depends upon the presence of absence of two genes --the A and B genes. These genes are encoded on chromosome 9 (They determine part of the configuration of the red blood cell surface.

A person can be A, B, AB, or O. If a person has two A genes, their red blood cells are type A. If a person has two B genes, their red cells are type B. If the person has one A and one B gene, their red cells are type AB. If the person has neither the A nor B gene, they are type O.