Blood Groups
There are four main blood groups A, B, AB and O. Your blood group is inherited from genes passed on by your parents. The two most important blood group systems for transfusion are ABO and Rhesus (Rh).
The ABO group system gives the letter part of your blood type and Rhesus system gives the positive or negative part. Blood is made up of red blood cells, white blood cells and platelets in a liquid called plasma. Your blood group is identified by antibodies and antigens in the blood.
The ABO group system gives the letter part of your blood type and Rhesus system gives the positive or negative part. Blood is made up of red blood cells, white blood cells and platelets in a liquid called plasma. Your blood group is identified by antibodies and antigens in the blood.
Antibodies are proteins found in plasma. They're part of your body's natural defences. They recognise foreign substances, such as germs, and alert your immune system, which destroys them.
Antigens are protein molecules found on the surface of red blood cells.
● Blood Group A
A antigens on the red blood cells with anti-B antibodies in the plasma.
● Blood Group B
B antigens with anti-A antibodies in the plasma.
● Blood Group O
No antigens, but both anti-A and anti-B antibodies in the plasma.
● Blood Group AB
Both A and B antigens, but no antibodies
No comments:
Post a Comment