The four major blood types present in the human population include group A, group B, group AB and group O, according to the Red Cross. These blood type groups are based on blood an...
In fact, there are eight different common blood types. ... There are four major
blood groups determined by the presence or absence of two antigens – A and B
So medical experts group blood into types based on the different markers. The
four main blood groups are: Type A. This blood type has a marker known as "A." ...
Blood Types. Human blood is grouped into four types: A, B, AB, and O. Each
letter refers to a kind of antigen, or protein, on the surface of red blood cells.
Sep 28, 2012 ... Information regarding blood types including charts outlining donor ... Your body
carries around four to six liters (7 to 10.5 pints) of blood.
There are four different blood types, known as blood groups. The four main blood
groups are A, B, AB and O.
Jul 13, 2012 ... The most common blood type among people in the U.S. is type O-positive.
However, we now know even type O negative blood may have antibodies that
cause serious reactions during a transfusion. There are four types of blood.
All humans and many other primates can be typed for the ABO blood group.
There are four principal types: A, B, AB, and O. There are two antigens and two ...