Blood types depend on heredity.
A person belongs to either of eight different blood types: A Rh+, A Rh-, B Rh+, B Rh-, AB Rh+, AB Rh-, O Rh+, O Rh-.
Blood types are determined according to 2 systems:
ABO blood type system:
Depends on the kind of antigens there are on the surface of red blood cells, blood type A/B/AB/O is determined.
Blood type A has Antigens-A.
Blood type B has Antigens-B.
Blood type AB has Antigens-A and Antigens-B.
Blood type O has no Antigens.
2. Antibodies: (in the blood plasma)
Antibodies are protein molecules floating around in the blood plasma. They are responsible for locking up with antigens of the same type to protect one's body from foreign or unidentified materials.
Blood type A has antibodies-B.
Blood type B has antibodies-A.
Blood type AB has no antibodies
Blood type O has antibodies-A and antibodies B.
Rhesus system:
A person's Rh type depends on the presence of Rh proteins on red blood cells surfaces.
1. Rhesus antigens: (on the surface of red blood cells)
Rhesus are protein molecules attached on the surface of red blood cells. If there is Rhesus present on the red blood cells of a person's blood then that person will belong to blood type Rh+. If there isn't any Rhesus proteins, the person belongs to blood type Rh-.
2. Rhesus antibodies: (in the plasma)
In Rh- blood type, there is a lack of Rhesus factor on red blood cells surface. Rh- blood type does not naturally have Rhesus antibodies in their blood but develop Rhesus antibodies once being transferred a Rh+ blood. Rh- blood type develops Rh antibodies against Rh antigens. So when talking about a Rh- blood type person, it can be assumed that there is Rh antibodies in the blood plasma. (?)
A person belongs to either of eight different blood types: A Rh+, A Rh-, B Rh+, B Rh-, AB Rh+, AB Rh-, O Rh+, O Rh-.
Blood types are determined according to 2 systems:
ABO blood type system:
Depends on the kind of antigens there are on the surface of red blood cells, blood type A/B/AB/O is determined.
- Antigens: (on the surface of red blood cells)
Blood type A has Antigens-A.
Blood type B has Antigens-B.
Blood type AB has Antigens-A and Antigens-B.
Blood type O has no Antigens.
2. Antibodies: (in the blood plasma)
Antibodies are protein molecules floating around in the blood plasma. They are responsible for locking up with antigens of the same type to protect one's body from foreign or unidentified materials.
Blood type A has antibodies-B.
Blood type B has antibodies-A.
Blood type AB has no antibodies
Blood type O has antibodies-A and antibodies B.
Rhesus system:
A person's Rh type depends on the presence of Rh proteins on red blood cells surfaces.
1. Rhesus antigens: (on the surface of red blood cells)
Rhesus are protein molecules attached on the surface of red blood cells. If there is Rhesus present on the red blood cells of a person's blood then that person will belong to blood type Rh+. If there isn't any Rhesus proteins, the person belongs to blood type Rh-.
2. Rhesus antibodies: (in the plasma)
In Rh- blood type, there is a lack of Rhesus factor on red blood cells surface. Rh- blood type does not naturally have Rhesus antibodies in their blood but develop Rhesus antibodies once being transferred a Rh+ blood. Rh- blood type develops Rh antibodies against Rh antigens. So when talking about a Rh- blood type person, it can be assumed that there is Rh antibodies in the blood plasma. (?)
Source: http://www.nobelprize.org/educational/medicine/bloodtypinggame/game/index.html
http://www.nobelprize.org/educational/medicine/bloodtypinggame/1.html
http://www.nobelprize.org/educational/medicine/bloodtypinggame/1.html